Who really likes reading long, boring problem statements?
Lengthy statements can get super tiring. So, I picked out all the problems with short and easy-to-read statements and sorted them. Sharing this list for all the lazy coders out there who want to get straight to the good stuff!
So, here you go — following this awesome blog, here’s the List of Problems Having Short Statements, version II
The problems are sorted from shortest to longest statement.
Only the problem description was counted — the input/output part and samples were ignored.
1600
- 1985G - D-Function
- 1458A - Row GCD
- 1542C - Strange Function
- 1519D - Maximum Sum of Products
- 2085C - Serval and The Formula
- 1856C - To Become Max
- 1364C - Ehab and Prefix MEXs
- 1971F - Circle Perimeter
- 1753B - Factorial Divisibility
- 1603B - Moderate Modular Mode
- 1514C - Product 1 Modulo N
- 1771C - Hossam and Trainees
- 2125D - Segments Covering
- 1342C - Yet Another Counting Problem
- 1497C2 - k-LCM (hard version)
- 1165D - Almost All Divisors
- 1622C - Set or Decrease
- 1133F1 - Spanning Tree with Maximum Degree
- 1513C - Add One
- 1165E - Two Arrays and Sum of Functions
- 1511D - Min Cost String
- 1396A - Multiples of Length
- 1398C - Good Subarrays
- 1288C - Two Arrays
- 1857F - Sum and Product
- 2132D - From 1 to Infinity
- 1748C - Zero-Sum Prefixes
- 2094F - Trulimero Trulicina
- 1395C - Boboniu and Bit Operations
- 2082B - Floor or Ceil
- 1610C - Keshi Is Throwing a Party
- 1503A - Balance the Bits
- 1633D - Make Them Equal
- 1946C - Tree Cutting
- 1904D1 - Set To Max (Easy Version)
- 1305C - Kuroni and Impossible Calculation
- 1730B - Meeting on the Line
- 1680C - Binary String
- 1822E - Making Anti-Palindromes
- 1234D - Distinct Characters Queries
- 1968E - Cells Arrangement
- 1787C - Remove the Bracket
- 1671D - Insert a Progression
- 1907E - Good Triples
- 1677A - Tokitsukaze and Strange Inequality
- 2004D - Colored Portals
- 1423K - Lonely Numbers
- 1781C - Equal Frequencies
- 1363C - Game On Leaves
- 1775C - Interesting Sequence
- 1175C - Electrification
- 1486C1 - Guessing the Greatest (easy version)
- 1151B - Dima and a Bad XOR
- 1796C - Maximum Set
- 1140C - Playlist
- 2043C - Sums on Segments
- 1528A - Parsa's Humongous Tree
- 2117E - Lost Soul
- 1996E - Decode
- 1702E - Split Into Two Sets
- 1612D - X-Magic Pair
- 1373D - Maximum Sum on Even Positions
- 1840E - Character Blocking
- 1527C - Sequence Pair Weight
- 1213D2 - Equalizing by Division (hard version)
- 1707A - Doremy's IQ
- 1352G - Special Permutation
- 1766D - Lucky Chains
- 1920C - Partitioning the Array
- 2061D - Kevin and Numbers
- 1829G - Hits Different
- 1774D - Same Count One
- 1389B - Array Walk
- 1582D - Vupsen, Pupsen and 0
- 1526C2 - Potions (Hard Version)
- 1849C - Binary String Copying
- 2061C - Kevin and Puzzle
- 2129B - Stay or Mirror
- 1615C - Menorah
- 1184C1 - Heidi and the Turing Test (Easy)
- 2046B - Move Back at a Cost
- 1198B - Welfare State
- 1798D - Shocking Arrangement
- 1482C - Basic Diplomacy
- 1407C - Chocolate Bunny
- 2128D - Sum of LDS
- 1833E - Round Dance
- 1349A - Orac and LCM
- 1932E - Final Countdown
- 2018A - Cards Partition
- 1875D - Jellyfish and Mex
- 1623C - Balanced Stone Heaps
- 1481C - Fence Painting
- 1632C - Strange Test
- 1722E - Counting Rectangles
- 1196D2 - RGB Substring (hard version)
- 1797C - Li Hua and Chess
- 2034D - Darius' Wisdom
- 1188A1 - Add on a Tree
- 1779C - Least Prefix Sum
Bonus!! Not too short, not too long (1600)
- 1295C - Obtain The String
- 1806C - Sequence Master
- 1660D - Maximum Product Strikes Back
- 1811D - Umka and a Long Flight
- 1151D - Stas and the Queue at the Buffet
- 1469C - Building a Fence
- 2051E - Best Price
- 1537E1 - Erase and Extend (Easy Version)
- 2063C - Remove Exactly Two
- 1801A - The Very Beautiful Blanket
- 1530D - Secret Santa
- 1455D - Sequence and Swaps
- 1886C - Decreasing String
- 1658D1 - 388535 (Easy Version)
- 1334C - Circle of Monsters
- 1512E - Permutation by Sum
- 1217B - Zmei Gorynich
- 1687A - The Enchanted Forest
- 1539D - PriceFixed
- 1665C - Tree Infection
- 2065E - Skibidus and Rizz
- 1555D - Say No to Palindromes
- 1928C - Physical Education Lesson
- 1109A - Sasha and a Bit of Relax
- 2103C - Median Splits
- 2028C - Alice's Adventures in Cutting Cake
- 2084D - Arcology On Permafrost
- 1689C - Infected Tree
- 1843E - Tracking Segments
- 1741E - Sending a Sequence Over the Network
- 1714D - Color with Occurrences
- 1148B - Born This Way
- 1878D - Reverse Madness
- 1243B2 - Character Swap (Hard Version)
- 1994C - Hungry Games
- 1371D - Grid-00100
- 1476C - Longest Simple Cycle
- 1980E - Permutation of Rows and Columns
- 1175B - Catch Overflow!
- 1137B - Camp Schedule
- 1303C - Perfect Keyboard
- 1520F1 - Guess the K-th Zero (Easy version)
- 1795D - Triangle Coloring
- 1225C - p-binary
- 1593E - Gardener and Tree
- 1917C - Watering an Array
- 1978D - Elections
- 1976C - Job Interview
- 1251C - Minimize The Integer
- 1698D - Fixed Point Guessing
- 1344A - Hilbert's Hotel
- 1203D1 - Remove the Substring (easy version)
- 2070D - Tree Jumps
- 1703G - Good Key, Bad Key
- 1956C - Nene's Magical Matrix
- 1567C - Carrying Conundrum
- 1327C - Game with Chips
- 1163B2 - Cat Party (Hard Edition)
- 1861C - Queries for the Array
- 1198A - MP3
- 1778C - Flexible String
- 1348C - Phoenix and Distribution
- 1353D - Constructing the Array
- 1609D - Social Network
- 1336A - Linova and Kingdom
- 2059C - Customer Service
- 2040C - Ordered Permutations
- 1452D - Radio Towers
- 1374E1 - Reading Books (easy version)
- 1461D - Divide and Summarize
- 1941E - Rudolf and k Bridges
- 1290A - Mind Control
- 1957C - How Does the Rook Move?
- 1475E - Advertising Agency
- 1523C - Compression and Expansion
- 1184D1 - Parallel Universes (Easy)
- 1358C - Celex Update
- 2037E - Kachina's Favorite Binary String
- 1498C - Planar Reflections
- 1862E - Kolya and Movie Theatre
- 2074E - Empty Triangle
- 1468K - The Robot
- 1321C - Remove Adjacent
- 1294D - MEX maximizing
- 1284C - New Year and Permutation
- 1281B - Azamon Web Services
- 1238C - Standard Free2play
- 1437D - Minimal Height Tree
- 1921E - Eat the Chip
- 2052A - Adrenaline Rush
1700
- 1325D - Ehab the Xorcist
- 1554B - Cobb
- 1512G - Short Task
- 2089A - Simple Permutation
- 1770C - Koxia and Number Theory
- 2122C - Manhattan Pairs
- 1485C - Floor and Mod
- 1883E - Look Back
- 1879D - Sum of XOR Functions
- 1469D - Ceil Divisions
- 2050F - Maximum modulo equality
- 1268A - Long Beautiful Integer
- 1144F - Graph Without Long Directed Paths
- 1971G - XOUR
- 1672D - Cyclic Rotation
- 1312D - Count the Arrays
- 1681D - Required Length
- 1983D - Swap Dilemma
- 1557C - Moamen and XOR
- 1148C - Crazy Diamond
- 1881F - Minimum Maximum Distance
- 2018C - Tree Pruning
- 1473D - Program
- 1537D - Deleting Divisors
- 1969C - Minimizing the Sum
- 1814B - Long Legs
- 1896D - Ones and Twos
- 1986E - Beautiful Array
- 1132C - Painting the Fence
- 1695C - Zero Path
- 1792D - Fixed Prefix Permutations
- 1176E - Cover it!
- 1822G1 - Magic Triples (Easy Version)
- 1467B - Hills And Valleys
- 2123F - Minimize Fixed Points
- 1799C - Double Lexicographically Minimum
- 1916D - Mathematical Problem
- 2112D - Reachability and Tree
- 1849D - Array Painting
- 1219C - Periodic integer number
- 1168A - Increasing by Modulo
- 2039D - Shohag Loves GCD
- 1621C - Hidden Permutations
- 1329B - Dreamoon Likes Sequences
- 1731C - Even Subarrays
- 1592C - Bakry and Partitioning
- 1948D - Tandem Repeats?
- 1722F - L-shapes
- 1253D - Harmonious Graph
- 1731D - Valiant's New Map
- 1619E - MEX and Increments
- 1217C - The Number Of Good Substrings
- 1706D1 - Chopping Carrots (Easy Version)
- 1157E - Minimum Array
- 1478C - Nezzar and Symmetric Array
- 1111B - Average Superhero Gang Power
- 1343D - Constant Palindrome Sum
- 1336B - Xenia and Colorful Gems
- 1538D - Another Problem About Dividing Numbers
- 1670D - Very Suspicious
- 1497E1 - Square-Free Division (easy version)
- 2104E - Unpleasant Strings
- 2009F - Firefly's Queries
- 1400B - RPG Protagonist
- 1835A - k-th equality
- 2086D - Even String
- 1551D1 - Domino (easy version)
- 2065G - Skibidus and Capping
- 1829H - Don't Blame Me
- 2031D - Penchick and Desert Rabbit
- 1889B - Doremy's Connecting Plan
- 1102E - Monotonic Renumeration
- 1360F - Spy-string
- 1185D - Extra Element
- 1550C - Manhattan Subarrays
- 1368D - AND, OR and square sum
- 1228C - Primes and Multiplication
- 1324E - Sleeping Schedule
- 2132E - Arithmetics Competition
- 1931F - Chat Screenshots
- 1516C - Baby Ehab Partitions Again
- 1644D - Cross Coloring
- 1451D - Circle Game
- 1608C - Game Master
- 1735D - Meta-set
- 1661C - Water the Trees
- 2041D - Drunken Maze
- 1118C - Palindromic Matrix
- 1777C - Quiz Master
- 1743D - Problem with Random Tests
- 1975D - Paint the Tree
- 1310A - Recommendations
- 1333C - Eugene and an array
- 1295B - Infinite Prefixes
- 1984C2 - Magnitude (Hard Version)
- 1864D - Matrix Cascade
- 1693B - Fake Plastic Trees
- 1411C - Peaceful Rooks
- 1381A2 - Prefix Flip (Hard Version)
- 1194D - 1-2-K Game
Bonus!! Not too short, not too long (1700)
- 2124D - Make a Palindrome
- 1209D - Cow and Snacks
- 1146C - Tree Diameter
- 1700C - Helping the Nature
- 1204C - Anna, Svyatoslav and Maps
- 1684D - Traps
- 2044G1 - Medium Demon Problem (easy version)
- 1468F - Full Turn
- 1580A - Portal
- 1598D - Training Session
- 1985H1 - Maximize the Largest Component (Easy Version)
- 1826D - Running Miles
- 1141E - Superhero Battle
- 1873H - Mad City
- 1111C - Creative Snap
- 1936A - Bitwise Operation Wizard
- 1884C - Medium Design
- 1479A - Searching Local Minimum
- 1365D - Solve The Maze
- 2045A - Scrambled Scrabble
- 1628B - Peculiar Movie Preferences
- 1950F - 0, 1, 2, Tree!
- 2072F - Goodbye, Banker Life
- 1970C2 - Game on Tree (Medium)
- 2113C - Smilo and Minecraft
- 1850H - The Third Letter
- 1934C - Find a Mine
- 1903D1 - Maximum And Queries (easy version)
- 1955E - Long Inversions
- 1114C - Trailing Loves (or L'oeufs?)
- 1690F - Shifting String
- 1893B - Neutral Tonality
- 2027D1 - The Endspeaker (Easy Version)
- 1594D - The Number of Imposters
- 1995B2 - Bouquet (Hard Version)
- 1474C - Array Destruction
- 1157C2 - Increasing Subsequence (hard version)
- 1237C1 - Balanced Removals (Easier)
- 1413D - Shurikens
- 1239A - Ivan the Fool and the Probability Theory
- 2109C2 - Hacking Numbers (Medium Version)
- 1973C - Cat, Fox and Double Maximum
- 1215D - Ticket Game
- 1715C - Monoblock
- 2118D1 - Red Light, Green Light (Easy version)
- 1491C - Pekora and Trampoline
- 1583C - Omkar and Determination
- 1462E2 - Close Tuples (hard version)
- 1503B - 3-Coloring
- 1301C - Ayoub's function
- 2065F - Skibidus and Slay
- 2071C - Trapmigiano Reggiano
- 1422C - Bargain
- 1906M - Triangle Construction
- 1359C - Mixing Water
- 2094G - Chimpanzini Bananini
- 1618E - Singers' Tour
- 2110D - Fewer Batteries
- 1393C - Pinkie Pie Eats Patty-cakes
- 2029C - New Rating
- 1699C - The Third Problem
- 1561D1 - Up the Strip (simplified version)
- 1210A - Anadi and Domino
- 1772E - Permutation Game
- 1203D2 - Remove the Substring (hard version)
- 1779D - Boris and His Amazing Haircut
- 1692H - Gambling
- 1578H - Higher Order Functions
- 2096C - Wonderful City
- 1335E1 - Three Blocks Palindrome (easy version)
- 1709D - Rorororobot
- 1528B - Kavi on Pairing Duty
- 1340B - Nastya and Scoreboard
- 1216C - White Sheet
- 1579F - Array Stabilization (AND version)
- 1406C - Link Cut Centroids
- 1210B - Marcin and Training Camp
- 1930C - Lexicographically Largest
- 1254A - Feeding Chicken
- 1611E1 - Escape The Maze (easy version)
- 1702F - Equate Multisets
- 1992E - Novice's Mistake
- 2030D - QED's Favorite Permutation
- 1279D - Santa's Bot
- 1760G - SlavicG's Favorite Problem
- 1430D - String Deletion
- 1383A - String Transformation 1
- 2052F - Fix Flooded Floor
- 1999G2 - Ruler (hard version)
- 1278C - Berry Jam
- 1942C2 - Bessie's Birthday Cake (Hard Version)
- 1453C - Triangles
- 1332D - Walk on Matrix
- 1131F - Asya And Kittens
- 1822F - Gardening Friends
- 1292B - Aroma's Search
- 1660F1 - Promising String (easy version)
- 1677B - Tokitsukaze and Meeting
- 1249E - By Elevator or Stairs?
- 1776F - Train Splitting
1800
- 1295D - Same GCDs
- 1225D - Power Products
- 1691D - Max GEQ Sum
- 1852A - Ntarsis' Set
- 1552D - Array Differentiation
- 2043D - Problem about GCD
- 1554C - Mikasa
- 1177B - Digits Sequence (Hard Edition)
- 2121F - Yamakasi
- 1758D - Range = √Sum
- 1208C - Magic Grid
- 1648B - Integral Array
- 1805D - A Wide, Wide Graph
- 1477A - Nezzar and Board
- 1637D - Yet Another Minimization Problem
- 1666C - Connect the Points
- 1781D - Many Perfect Squares
- 1935D - Exam in MAC
- 1213G - Path Queries
- 1721D - Maximum AND
- 2039C2 - Shohag Loves XOR (Hard Version)
- 1750D - Count GCD
- 2033F - Kosuke's Sloth
- 1907F - Shift and Reverse
- 1491D - Zookeeper and The Infinite Zoo
- 2071D1 - Infinite Sequence (Easy Version)
- 1152C - Neko does Maths
- 1249D2 - Too Many Segments (hard version)
- 1249D1 - Too Many Segments (easy version)
- 1118F1 - Tree Cutting (Easy Version)
- 1267L - Lexicography
- 1904D2 - Set To Max (Hard Version)
- 1852B - Imbalanced Arrays
- 1635D - Infinite Set
- 1974E - Money Buys Happiness
- 1355C - Count Triangles
- 1995C - Squaring
- 1861D - Sorting By Multiplication
- 1554D - Diane
- 1990D - Grid Puzzle
- 1437C - Chef Monocarp
- 1500A - Going Home
- 1326D2 - Prefix-Suffix Palindrome (Hard version)
- 1466E - Apollo versus Pan
- 1548B - Integers Have Friends
- 1965B - Missing Subsequence Sum
- 1630B - Range and Partition
- 1286B - Numbers on Tree
- 1327E - Count The Blocks
- 1107D - Compression
- 1949I - Disks
- 1768D - Lucky Permutation
- 1138B - Circus
- 1833G - Ksyusha and Chinchilla
- 1968F - Equal XOR Segments
- 2081A - Math Division
- 1705D - Mark and Lightbulbs
- 1709C - Recover an RBS
- 2008G - Sakurako's Task
- 1334D - Minimum Euler Cycle
- 1396B - Stoned Game
- 1442B - Identify the Operations
- 1732C1 - Sheikh (Easy version)
- 1867D - Cyclic Operations
- 1136D - Nastya Is Buying Lunch
- 1156B - Ugly Pairs
- 1324F - Maximum White Subtree
- 1509C - The Sports Festival
- 2069D - Palindrome Shuffle
- 1809D - Binary String Sorting
- 1954D - Colored Balls
- 1870D - Prefix Purchase
- 1987D - World is Mine
- 1401D - Maximum Distributed Tree
- 1583D - Omkar and the Meaning of Life
- 1221D - Make The Fence Great Again
- 1148D - Dirty Deeds Done Dirt Cheap
- 1970E1 - Trails (Easy)
- 1720D1 - Xor-Subsequence (easy version)
- 1572A - Book
- 1172A - Nauuo and Cards
- 1556D - Take a Guess
- 2035D - Yet Another Real Number Problem
- 1582F1 - Korney Korneevich and XOR (easy version)
- 1329A - Dreamoon Likes Coloring
- 2025D - Attribute Checks
- 2078D - Scammy Game Ad
- 1575D - Divisible by Twenty-Five
- 1508B - Almost Sorted
- 1552C - Maximize the Intersections
- 1462F - The Treasure of The Segments
- 1244D - Paint the Tree
- 1841C - Ranom Numbers
- 1922E - Increasing Subsequences
- 2020D - Connect the Dots
- 1442A - Extreme Subtraction
- 1556C - Compressed Bracket Sequence
- 1856E1 - PermuTree (easy version)
- 1286A - Garland
- 1675F - Vlad and Unfinished Business
Bonus!! Not too short, not too long (1800)
- 1620C - BA-String
- 1728D - Letter Picking
- 1941F - Rudolf and Imbalance
- 1394A - Boboniu Chats with Du
- 2117F - Wildflower
- 1420D - Rescue Nibel!
- 1250J - The Parade
- 1666L - Labyrinth
- 1534D - Lost Tree
- 2092D - Mishkin Energizer
- 1955F - Unfair Game
- 1845D - Rating System
- 1793D - Moscow Gorillas
- 1187C - Vasya And Array
- 1851F - Lisa and the Martians
- 1196E - Connected Component on a Chessboard
- 1316C - Primitive Primes
- 1267J - Just Arrange the Icons
- 1338B - Edge Weight Assignment
- 1780D - Bit Guessing Game
- 1759F - All Possible Digits
- 1283D - Christmas Trees
- 1525D - Armchairs
- 1725M - Moving Both Hands
- 1299B - Aerodynamic
- 1283E - New Year Parties
- 1296E1 - String Coloring (easy version)
- 1328D - Carousel
- 1713D - Tournament Countdown
- 1176D - Recover it!
- 1846E2 - Rudolf and Snowflakes (hard version)
- 1398D - Colored Rectangles
- 1617D1 - Too Many Impostors (easy version)
- 1930D1 - Sum over all Substrings (Easy Version)
- 2101B - Quartet Swapping
- 1186C - Vus the Cossack and Strings
- 2022C - Gerrymandering
- 2014E - Rendez-vous de Marian et Robin
- 1981C - Turtle and an Incomplete Sequence
- 1734D - Slime Escape
- 1718A1 - Burenka and Traditions (easy version)
- 1108E1 - Array and Segments (Easy version)
- 1935C - Messenger in MAC
- 1409E - Two Platforms
- 1250B - The Feast and the Bus
- 1674F - Desktop Rearrangement
- 1154E - Two Teams
- 1133E - K Balanced Teams
- 1560E - Polycarp and String Transformation
- 1335E2 - Three Blocks Palindrome (hard version)
- 1517D - Explorer Space
- 1848C - Vika and Price Tags
- 1912K - Kim's Quest
- 1450D - Rating Compression
- 1862F - Magic Will Save the World
- 1119D - Frets On Fire
- 2120D - Matrix game
- 1824B1 - LuoTianyi and the Floating Islands (Easy Version)
- 1463C - Busy Robot
- 1254B1 - Send Boxes to Alice (Easy Version)
- 1446B - Catching Cheaters
- 2106E - Wolf
- 1859D - Andrey and Escape from Capygrad
- 1979D - Fixing a Binary String
- 1179B - Tolik and His Uncle
- 1304D - Shortest and Longest LIS
- 1740E - Hanging Hearts
- 1678B2 - Tokitsukaze and Good 01-String (hard version)
- 1729E - Guess the Cycle Size
- 1801B - Buying gifts
- 1207D - Number Of Permutations
- 1151C - Problem for Nazar
- 1915G - Bicycles
- 1923D - Slimes
- 1190B - Tokitsukaze, CSL and Stone Game
- 1611F - ATM and Students
- 1252H - Twin Buildings
- 1846F - Rudolph and Mimic
- 2042C - Competitive Fishing
- 1129A2 - Toy Train
- 2006B - Iris and the Tree
- 2005C - Lazy Narek
- 1725H - Hot Black Hot White
- 1426E - Rock, Paper, Scissors
- 1468J - Road Reform
- 1290B - Irreducible Anagrams
- 1619D - New Year's Problem
- 1775D - Friendly Spiders
- 2127D - Root was Built by Love, Broken by Destiny
- 1381B - Unmerge
- 1475D - Cleaning the Phone
1900
- 1400D - Zigzags
- 1909I - Short Permutation Problem
- 1957D - A BIT of an Inequality
- 1492D - Genius's Gambit
- 1895D - XOR Construction
- 1656D - K-good
- 1620E - Replace the Numbers
- 1205B - Shortest Cycle
- 1168B - Good Triple
- 1986F - Non-academic Problem
- 2040D - Non Prime Tree
- 1991D - Prime XOR Coloring
- 1285D - Dr. Evil Underscores
- 1996F - Bomb
- 2121G - Gangsta
- 1744E2 - Divisible Numbers (hard version)
- 1921F - Sum of Progression
- 1272E - Nearest Opposite Parity
- 1707B - Difference Array
- 1651D - Nearest Excluded Points
- 1133F2 - Spanning Tree with One Fixed Degree
- 1898D - Absolute Beauty
- 2117G - Omg Graph
- 2018B - Speedbreaker
- 1174D - Ehab and the Expected XOR Problem
- 1909D - Split Plus K
- 1927F - Microcycle
- 1264B - Beautiful Sequence
- 1155D - Beautiful Array
- 2077B - Finding OR Sum
- 1560F1 - Nearest Beautiful Number (easy version)
- 2026D - Sums of Segments
- 1119E - Pavel and Triangles
- 2094H - La Vaca Saturno Saturnita
- 1328E - Tree Queries
- 1360G - A/B Matrix
- 1303D - Fill The Bag
- 1430E - String Reversal
- 2000F - Color Rows and Columns
- 1902E - Collapsing Strings
- 1715D - 2+ doors
- 1714F - Build a Tree and That Is It
- 1920D - Array Repetition
- 1463D - Pairs
- 1787D - Game on Axis
- 2013D - Minimize the Difference
- 1486C2 - Guessing the Greatest (hard version)
- 1600E - Array Game
- 1444B - Divide and Sum
- 1891D - Suspicious logarithms
- 1627D - Not Adding
- 1208D - Restore Permutation
- 1774E - Two Chess Pieces
- 1147B - Chladni Figure
- 1912A - Accumulator Apex
- 2050G - Tree Destruction
- 1791G2 - Teleporters (Hard Version)
- 1777D - Score of a Tree
- 1365E - Maximum Subsequence Value
- 1854A2 - Dual (Hard Version)
- 1593D2 - Half of Same
- 2029D - Cool Graph
- 1647D - Madoka and the Best School in Russia
- 1746D - Paths on the Tree
- 1213E - Two Small Strings
- 1994D - Funny Game
- 1794D - Counting Factorizations
- 1144E - Median String
- 1739D - Reset K Edges
- 2066B - White Magic
- 1439A2 - Binary Table (Hard Version)
- 1991E - Coloring Game
- 1902D - Robot Queries
- 1701D - Permutation Restoration
- 1946D - Birthday Gift
- 1624G - MinOr Tree
- 1508A - Binary Literature
- 1311F - Moving Points
- 1834D - Survey in Class
- 1307D - Cow and Fields
- 1175D - Array Splitting
- 1197D - Yet Another Subarray Problem
- 1348D - Phoenix and Science
- 1242B - 0-1 MST
- 1977C - Nikita and LCM
- 1747D - Yet Another Problem
- 1968G1 - Division + LCP (easy version)
- 1354D - Multiset
- 1689D - Lena and Matrix
- 1932F - Feed Cats
- 2036F - XORificator 3000
- 1817B - Fish Graph
- 1601B - Frog Traveler
- 1773A - Amazing Trick
- 1784B - Letter Exchange
- 2093G - Shorten the Array
- 2044G2 - Medium Demon Problem (hard version)
- 1470B - Strange Definition
- 1238D - AB-string
- 1294E - Obtain a Permutation
Bonus!! Not too short, not too long (1900)
- 1421D - Hexagons
- 2042D - Recommendations
- 1276B - Two Fairs
- 1251D - Salary Changing
- 2068F - Mascot Naming
- 1882D - Tree XOR
- 1585D - Yet Another Sorting Problem
- 1846G - Rudolf and CodeVid-23
- 2009G1 - Yunli's Subarray Queries (easy version)
- 1475G - Strange Beauty
- 1679D - Toss a Coin to Your Graph...
- 1659D - Reverse Sort Sum
- 1970C3 - Game on Tree (Hard)
- 1878F - Vasilije Loves Number Theory
- 1114D - Flood Fill
- 1925D - Good Trip
- 1545B - AquaMoon and Chess
- 1178E - Archaeology
- 1644E - Expand the Path
- 1383B - GameGame
- 2059D - Graph and Graph
- 1467C - Three Bags
- 1801C - Music Festival
- 2038G - Guess One Character
- 1998C - Perform Operations to Maximize Score
- 1949C - Annual Ants' Gathering
- 1696D - Permutation Graph
- 1613D - MEX Sequences
- 1477B - Nezzar and Binary String
- 1202D - Print a 1337-string...
- 1237C2 - Balanced Removals (Harder)
- 1950G - Shuffling Songs
- 1797D - Li Hua and Tree
- 1922D - Berserk Monsters
- 1423B - Valuable Paper
- 1216E1 - Numerical Sequence (easy version)
- 1413C - Perform Easily
- 1270D - Strange Device
- 1353E - K-periodic Garland
- 1673D - Lost Arithmetic Progression
- 1702G1 - Passable Paths (easy version)
- 1494C - 1D Sokoban
- 1928D - Lonely Mountain Dungeons
- 2001D - Longest Max Min Subsequence
- 1495B - Let's Go Hiking
- 2044F - Easy Demon Problem
- 1558B - Up the Strip
- 1228D - Complete Tripartite
- 2111E - Changing the String
- 1799D1 - Hot Start Up (easy version)
- 1361B - Johnny and Grandmaster
- 1569D - Inconvenient Pairs
- 2128E1 - Submedians (Easy Version)
- 1969D - Shop Game
- 1821D - Black Cells
- 1800F - Dasha and Nightmares
- 1661D - Progressions Covering
- 1183H - Subsequences (hard version)
- 1992F - Valuable Cards
- 1475F - Unusual Matrix
- 1974F - Cutting Game
- 1989D - Smithing Skill
- 1918D - Blocking Elements
- 1404B - Tree Tag
- 1738D - Permutation Addicts
- 1883G2 - Dances (Hard Version)
- 1305D - Kuroni and the Celebration
- 2089B1 - Canteen (Easy Version)
- 1926G - Vlad and Trouble at MIT
- 1718A2 - Burenka and Traditions (hard version)
- 1929D - Sasha and a Walk in the City
- 1914F - Programming Competition
- 1220D - Alex and Julian
- 1759G - Restore the Permutation
- 1141F2 - Same Sum Blocks (Hard)
- 1141F1 - Same Sum Blocks (Easy)
- 2131F - Unjust Binary Life
- 1955G - GCD on a grid
- 1358D - The Best Vacation
- 1200D - White Lines
- 1207E - XOR Guessing
- 1677C - Tokitsukaze and Two Colorful Tapes
- 2109D - D/D/D
- 1648C - Tyler and Strings
- 1153D - Serval and Rooted Tree
- 1808C - Unlucky Numbers
- 1547F - Array Stabilization (GCD version)
- 1375D - Replace by MEX
- 2064D - Eating
- 1105D - Kilani and the Game
- 1887B - Time Travel
- 1342D - Multiple Testcases
- 1729F - Kirei and the Linear Function
- 1823D - Unique Palindromes
- 2002D1 - DFS Checker (Easy Version)
- 2106F - Goblin
- 1277D - Let's Play the Words?
- 1428D - Bouncing Boomerangs
- 1163C1 - Power Transmission (Easy Edition)
- 1163C2 - Power Transmission (Hard Edition)
2000
- 1830B - The BOSS Can Count Pairs
- 1366D - Two Divisors
- 1198C - Matching vs Independent Set
- 1156C - Match Points
- 1268B - Domino for Young
- 1567D - Expression Evaluation Error
- 1763C - Another Array Problem
- 1616D - Keep the Average High
- 2114F - Small Operations
- 1624F - Interacdive Problem
- 1665D - GCD Guess
- 1244E - Minimizing Difference
- 1391D - 505
- 1132F - Clear the String
- 2075D - Equalization
- 1416B - Make Them Equal
- 1288D - Minimax Problem
- 1294F - Three Paths on a Tree
- 1622D - Shuffle
- 2041C - Cube
- 1984D - ''a'' String Problem
- 2045B - ICPC Square
- 1416C - XOR Inverse
- 2061E - Kevin and And
- 1872G - Replace With Product
- 1900D - Small GCD
- 2037G - Natlan Exploring
- 1672F1 - Array Shuffling
- 1923E - Count Paths
- 1891F - A Growing Tree
- 1726D - Edge Split
- 1385E - Directing Edges
- 1209E1 - Rotate Columns (easy version)
- 1311D - Three Integers
- 1200E - Compress Words
- 1646D - Weight the Tree
- 1101D - GCD Counting
- 2131G - Wafu!
- 1733D2 - Zero-One (Hard Version)
- 1521C - Nastia and a Hidden Permutation
- 1147C - Thanos Nim
- 1951E - No Palindromes
- 1987E - Wonderful Tree!
- 1558C - Bottom-Tier Reversals
- 1103B - Game with modulo
- 1905D - Cyclic MEX
- 1857G - Counting Graphs
- 1827B1 - Range Sorting (Easy Version)
- 1685B - Linguistics
- 2051F - Joker
- 1354C2 - Not So Simple Polygon Embedding
- 1682D - Circular Spanning Tree
- 1536D - Omkar and Medians
- 1359E - Modular Stability
- 2126F - 1-1-1, Free Tree!
- 1493C - K-beautiful Strings
- 2048E - Kevin and Bipartite Graph
- 1994E - Wooden Game
- 1992G - Ultra-Meow
- 1349B - Orac and Medians
- 1978E - Computing Machine
- 1451E1 - Bitwise Queries (Easy Version)
- 1851G - Vlad and the Mountains
- 1970E2 - Trails (Medium)
- 1889C1 - Doremy's Drying Plan (Easy Version)
- 1370D - Odd-Even Subsequence
- 1943B - Non-Palindromic Substring
- 1956D - Nene and the Mex Operator
- 1408D - Searchlights
- 1744F - MEX vs MED
- 2020E - Expected Power
- 1620D - Exact Change
- 1234E - Special Permutations
- 1788D - Moving Dots
- 1988D - The Omnipotent Monster Killer
- 1388D - Captain Flint and Treasure
- 1359D - Yet Another Yet Another Task
- 1712D - Empty Graph
- 1974G - Money Buys Less Happiness Now
- 1363E - Tree Shuffling
- 1638D - Big Brush
- 1525C - Robot Collisions
- 1102F - Elongated Matrix
- 1244C - The Football Season
- 1753C - Wish I Knew How to Sort
- 1513D - GCD and MST
- 1415D - XOR-gun
- 1796D - Maximum Subarray
- 1680E - Moving Chips
- 1716C - Robot in a Hallway
- 1764D - Doremy's Pegging Game
- 1438C - Engineer Artem
- 1976D - Invertible Bracket Sequences
- 1349C - Orac and Game of Life
- 1380D - Berserk And Fireball
- 1931G - One-Dimensional Puzzle
- 1204D1 - Kirk and a Binary String (easy version)
- 2057D - Gifts Order
- 1903E - Geo Game
- 1379C - Choosing flowers
Bonus!! Not too short, not too long (2000)
- 1951D - Buying Jewels
- 1157F - Maximum Balanced Circle
- 2096D - Wonderful Lightbulbs
- 1867E1 - Salyg1n and Array (simple version)
- 1454E - Number of Simple Paths
- 1716D - Chip Move
- 1893C - Freedom of Choice
- 1584D - Guess the Permutation
- 1487E - Cheap Dinner
- 1674G - Remove Directed Edges
- 1256F - Equalizing Two Strings
- 1619G - Unusual Minesweeper
- 1209G1 - Into Blocks (easy version)
- 1641B - Repetitions Decoding
- 1634D - Finding Zero
- 1702G2 - Passable Paths (hard version)
- 1190D - Tokitsukaze and Strange Rectangle
- 1936B - Pinball
- 1481D - AB Graph
- 1256E - Yet Another Division Into Teams
- 1551E - Fixed Points
- 2062E1 - The Game (Easy Version)
- 1574D - The Strongest Build
- 1582E - Pchelyonok and Segments
- 1304E - 1-Trees and Queries
- 1219G - Harvester
- 1142B - Lynyrd Skynyrd
- 1183E - Subsequences (easy version)
- 1610D - Not Quite Lee
- 1941G - Rudolf and Subway
- 1624E - Masha-forgetful
- 1296E2 - String Coloring (hard version)
- 2068J - The Ultimate Wine Tasting Event
- 1772F - Copy of a Copy of a Copy
- 1426F - Number of Subsequences
- 1237D - Balanced Playlist
- 1514D - Cut and Stick
- 1696E - Placing Jinas
- 1618F - Reverse
- 1770D - Koxia and Game
- 1566E - Buds Re-hanging
- 1223D - Sequence Sorting
- 2063D - Game With Triangles
- 1725C - Circular Mirror
- 2085D - Serval and Kaitenzushi Buffet
- 1815B - Sum Graph
- 1613E - Crazy Robot
- 1599C - Bubble Strike
- 1674E - Breaking the Wall
- 1718B - Fibonacci Strings
- 1690G - Count the Trains
- 1506G - Maximize the Remaining String
- 1783D - Different Arrays
- 1862G - The Great Equalizer
- 1841D - Pairs of Segments
- 1266D - Decreasing Debts
- 1731E - Graph Cost
- 2014F - Sheriff's Defense
- 1165F2 - Microtransactions (hard version)
- 1165F1 - Microtransactions (easy version)
- 2129C2 - Interactive RBS (Medium Version)
- 1919H - Tree Diameter
- 2028D - Alice's Adventures in Cards
- 1427C - The Hard Work of Paparazzi
- 1210C - Kamil and Making a Stream
- 1399E1 - Weights Division (easy version)
- 2052J - Judicious Watching
- 1458B - Glass Half Spilled
- 1288E - Messenger Simulator
- 1741F - Multi-Colored Segments
- 1657D - For Gamers. By Gamers.
- 1632D - New Year Concert
- 1248D1 - The World Is Just a Programming Task (Easy Version)
- 1129B - Wrong Answer
- 1250N - Wires
- 1257E - The Contest
- 1804D - Accommodation
- 1612E - Messages
- 1185E - Polycarp and Snakes
- 1427D - Unshuffling a Deck
- 1183G - Candy Box (hard version)
- 1344B - Monopole Magnets
- 1320C - World of Darkraft: Battle for Azathoth
- 1881G - Anya and the Mysterious String
- 1214E - Petya and Construction Set
2100
- 1748D - ConstructOR
- 1884D - Counting Rhyme
- 1499D - The Number of Pairs
- 1667B - Optimal Partition
- 1493D - GCD of an Array
- 1217D - Coloring Edges
- 1207F - Remainder Problem
- 1761D - Carry Bit
- 1312E - Array Shrinking
- 2038B - Make It Equal
- 1778D - Flexible String Revisit
- 1486D - Max Median
- 1433F - Zero Remainder Sum
- 1575L - Longest Array Deconstruction
- 1560F2 - Nearest Beautiful Number (hard version)
- 1184A2 - Heidi Learns Hashing (Medium)
- 1637E - Best Pair
- 1167E - Range Deleting
- 1364D - Ehab's Last Corollary
- 1684E - MEX vs DIFF
- 1510D - Digits
- 1146D - Frog Jumping
- 1151E - Number of Components
- 1975E - Chain Queries
- 1762D - GCD Queries
- 1411D - Grime Zoo
- 1551D2 - Domino (hard version)
- 1734E - Rectangular Congruence
- 1913D - Array Collapse
- 1906F - Maximize The Value
- 2115B - Gellyfish and Camellia Japonica
- 1354E - Graph Coloring
- 1811F - Is It Flower?
- 1614D1 - Divan and Kostomuksha (easy version)
- 1271E - Common Number
- 2004E - Not a Nim Problem
- 1409F - Subsequences of Length Two
- 1555E - Boring Segments
- 1419E - Decryption
- 1732C2 - Sheikh (Hard Version)
- 1538G - Gift Set
- 1920E - Counting Binary Strings
- 2123G - Modular Sorting
- 1454F - Array Partition
- 1790F - Timofey and Black-White Tree
- 1516D - Cut
- 1365F - Swaps Again
- 1767C - Count Binary Strings
- 1811G1 - Vlad and the Nice Paths (easy version)
- 2068C - Ads
- 1876C - Autosynthesis
- 2008H - Sakurako's Test
- 1213F - Unstable String Sort
- 1372D - Omkar and Circle
- 1934D1 - XOR Break --- Solo Version
- 2038K - Grid Walk
- 1710B - Rain
- 1223E - Paint the Tree
- 2107D - Apple Tree Traversing
- 2029E - Common Generator
- 1322B - Present
- 1530E - Minimax
- 1896E - Permutation Sorting
- 2052D - DAG Serialization
- 1117D - Magic Gems
- 2045I - Microwavable Subsequence
- 1355E - Restorer Distance
- 1366E - Two Arrays
- 1866G - Grouped Carriages
- 1832D1 - Red-Blue Operations (Easy Version)
- 2124E - Make it Zero
- 1472F - New Year's Puzzle
- 1184E2 - Daleks' Invasion (medium)
- 1810E - Monsters
- 2044H - Hard Demon Problem
- 1176F - Destroy it!
- 1606E - Arena
- 1389D - Segment Intersections
- 1866H - Happy Sets
- 1201D - Treasure Hunting
- 1299C - Water Balance
- 1942D - Learning to Paint
- 1154F - Shovels Shop
- 1252K - Addition Robot
- 1120C - Compress String
- 1801D - The way home
- 1948E - Clique Partition
- 1216F - Wi-Fi
- 1158C - Permutation recovery
- 2051G - Snakes
- 2119D - Token Removing
- 1204D2 - Kirk and a Binary String (hard version)
- 1370E - Binary Subsequence Rotation
- 1650G - Counting Shortcuts
- 1450C1 - Errich-Tac-Toe (Easy Version)
- 1278D - Segment Tree
- 1856D - More Wrong
- 1511E - Colorings and Dominoes
- 1799D2 - Hot Start Up (hard version)
- 1924B - Space Harbour
Bonus!! Not too short, not too long (2100)
- 1553E - Permutation Shift
- 1628D1 - Game on Sum (Easy Version)
- 1900E - Transitive Graph
- 1187E - Tree Painting
- 2046C - Adventurers
- 2074G - Game With Triangles: Season 2
- 1363D - Guess The Maximums
- 1930D2 - Sum over all Substrings (Hard Version)
- 1152D - Neko and Aki's Prank
- 1296F - Berland Beauty
- 2005E1 - Subtangle Game (Easy Version)
- 1265E - Beautiful Mirrors
- 2092E - She knows...
- 1185F - Two Pizzas
- 1108E2 - Array and Segments (Hard version)
- 1654D - Potion Brewing Class
- 1163D - Mysterious Code
- 1593F - Red-Black Number
- 2040E - Control of Randomness
- 1787E - The Harmonization of XOR
- 1332E - Height All the Same
- 1203F1 - Complete the Projects (easy version)
- 1482E - Skyline Photo
- 1971H - ±1
- 1729G - Cut Substrings
- 1863E - Speedrun
- 1433G - Reducing Delivery Cost
- 1367F1 - Flying Sort (Easy Version)
- 1914G1 - Light Bulbs (Easy Version)
- 1166E - The LCMs Must be Large
- 1599H - Hidden Fortress
- 1808D - Petya, Petya, Petr, and Palindromes
- 1666J - Job Lookup
- 1218I - The Light Square
- 1525E - Assimilation IV
- 1202C - You Are Given a WASD-string...
- 1393D - Rarity and New Dress
- 1183F - Topforces Strikes Back
- 1254B2 - Send Boxes to Alice (Hard Version)
- 2061F1 - Kevin and Binary String (Easy Version)
- 1108F - MST Unification
- 1185G1 - Playlist for Polycarp (easy version)
- 1598E - Staircases
- 1886D - Monocarp and the Set
- 1343E - Weights Distributing
- 1660F2 - Promising String (hard version)
- 2037F - Ardent Flames
- 1479B2 - Painting the Array II
- 2127E - Ancient Tree
- 1771D - Hossam and (sub-)palindromic tree
- 1252G - Performance Review
- 1919D - 01 Tree
- 1538E - Funny Substrings
- 1868B2 - Candy Party (Hard Version)
- 1821E - Rearrange Brackets
- 2003D2 - Turtle and a MEX Problem (Hard Version)
- 1420C2 - Pokémon Army (hard version)
- 1413E - Solo mid Oracle
- 1970D1 - Arithmancy (Easy)
- 1446C - Xor Tree
- 1195E - OpenStreetMap
- 1472G - Moving to the Capital
- 1626D - Martial Arts Tournament
- 2000G - Call During the Journey
- 1333D - Challenges in school №41
- 1106E - Lunar New Year and Red Envelopes
- 1360H - Binary Median
- 1418D - Trash Problem
- 2132F - Rada and the Chamomile Valley
- 1267K - Key Storage
- 1250C - Trip to Saint Petersburg
- 1864E - Guess Game
- 1671E - Preorder
- 1284D - New Year and Conference
- 1547G - How Many Paths?
- 1776G - Another Wine Tasting Event
- 1906J - Count BFS Graph
- 1392E - Omkar and Duck
2200
- 1373E - Sum of Digits
- 1070A - Find a Number
- 1156E - Special Segments of Permutation
- 1154G - Minimum Possible LCM
- 1967B2 - Reverse Card (Hard Version)
- 1656E - Equal Tree Sums
- 1168C - And Reachability
- 1730D - Prefixes and Suffixes
- 1175E - Minimal Segment Cover
- 1389E - Calendar Ambiguity
- 1503C - Travelling Salesman Problem
- 1646E - Power Board
- 1630C - Paint the Middle
- 1575G - GCD Festival
- 1537F - Figure Fixing
- 2018D - Max Plus Min Plus Size
- 1926F - Vlad and Avoiding X
- 1991F - Triangle Formation
- 1763D - Valid Bitonic Permutations
- 1907G - Lights
- 1438D - Powerful Ksenia
- 1949F - Dating
- 1437E - Make It Increasing
- 2013E - Prefix GCD
- 1156D - 0-1-Tree
- 1140E - Palindrome-less Arrays
- 1717E - Madoka and The Best University
- 2060F - Multiplicative Arrays
- 1155E - Guess the Root
- 1704E - Count Seconds
- 1986G1 - Permutation Problem (Simple Version)
- 1551F - Equidistant Vertices
- 1196F - K-th Path
- 1822G2 - Magic Triples (Hard Version)
- 1616E - Lexicographically Small Enough
- 1136E - Nastya Hasn't Written a Legend
- 1166D - Cute Sequences
- 1485D - Multiples and Power Differences
- 2056D - Unique Median
- 2112E - Tree Colorings
- 1777E - Edge Reverse
- 1763E - Node Pairs
- 1909F1 - Small Permutation Problem (Easy Version)
- 1249F - Maximum Weight Subset
- 1034B - Little C Loves 3 II
- 1841E - Fill the Matrix
- 1486E - Paired Payment
- 1468A - LaIS
- 1105E - Helping Hiasat
- 1996G - Penacony
- 2101C - 23 Kingdom
- 1832E - Combinatorics Problem
- 1208E - Let Them Slide
- 1567E - Non-Decreasing Dilemma
- 1806E - Tree Master
- 1428E - Carrots for Rabbits
- 1184C2 - Heidi and the Turing Test (Medium)
- 1333F - Kate and imperfection
- 1037E - Trips
- 1311E - Construct the Binary Tree
- 1946E - Girl Permutation
- 1157G - Inverse of Rows and Columns
- 2085E - Serval and Modulo
- 1968G2 - Division + LCP (hard version)
- 1921G - Mischievous Shooter
- 1327D - Infinite Path
- 1303E - Erase Subsequences
- 1110D - Jongmah
- 1788E - Sum Over Zero
- 1800G - Symmetree
- 1278E - Tests for problem D
- 1328F - Make k Equal
- 1470D - Strange Housing
- 1515E - Phoenix and Computers
- 1400E - Clear the Multiset
- 1657E - Star MST
- 1406D - Three Sequences
- 2009G2 - Yunli's Subarray Queries (hard version)
- 1097D - Makoto and a Blackboard
- 2034E - Permutations Harmony
- 1811G2 - Vlad and the Nice Paths (hard version)
- 1407D - Discrete Centrifugal Jumps
- 1580C - Train Maintenance
- 1695D1 - Tree Queries (Easy Version)
- 1970E3 - Trails (Hard)
- 2039E - Shohag Loves Inversions
- 1575H - Holiday Wall Ornaments
- 1110E - Magic Stones
- 1424M - Ancient Language
- 1997E - Level Up
- 1474D - Cleaning
- 1045G - AI robots
- 1272F - Two Bracket Sequences
- 1059D - Nature Reserve
- 2045H - Missing Separators
- 1220E - Tourism
- 1918E - ace5 and Task Order
- 1253E - Antenna Coverage
- 1854B - Earn or Unlock
- 1542D - Priority Queue
Bonus!! Not too short, not too long (2200)
- 1898E - Sofia and Strings
- 1526D - Kill Anton
- 1537E2 - Erase and Extend (Hard Version)
- 1721E - Prefix Function Queries
- 1985H2 - Maximize the Largest Component (Hard Version)
- 1860D - Balanced String
- 1338C - Perfect Triples
- 1234F - Yet Another Substring Reverse
- 1666I - Interactive Treasure Hunt
- 2000H - Ksyusha and the Loaded Set
- 1815C - Between
- 1765H - Hospital Queue
- 1559E - Mocha and Stars
- 2126G1 - Big Wins! (easy version)
- 1840G1 - In Search of Truth (Easy Version)
- 1225E - Rock Is Push
- 2062D - Balanced Tree
- 1557D - Ezzat and Grid
- 1520F2 - Guess the K-th Zero (Hard version)
- 1238F - The Maximum Subtree
- 1607H - Banquet Preparations 2
- 2033G - Sakurako and Chefir
- 1641C - Anonymity Is Important
- 1867E2 - Salyg1n and Array (hard version)
- 1556E - Equilibrium
- 2030E - MEXimize the Score
- 1607G - Banquet Preparations 1
- 1477C - Nezzar and Nice Beatmap
- 1622E - Math Test
- 2113D - Cheater
- 1670E - Hemose on the Tree
- 1912E - Evaluate It and Back Again
- 2014G - Milky Days
- 2065H - Bro Thinks He's Him
- 1901E - Compressed Tree
- 1461E - Water Level
- 1216E2 - Numerical Sequence (hard version)
- 2114G - Build an Array
- 2118D2 - Red Light, Green Light (Hard version)
- 1215E - Marbles
- 1575K - Knitting Batik
- 2108D - Needle in a Numstack
- 1848D - Vika and Bonuses
- 1906H - Twin Friends
- 1993D - Med-imize
- 1194E - Count The Rectangles
- 1789D - Serval and Shift-Shift-Shift
- 1784C - Monsters (hard version)
- 1181D - Irrigation
- 1741G - Kirill and Company
- 1498D - Bananas in a Microwave
- 1425E - Excitation of Atoms
- 1178F1 - Short Colorful Strip
- 1583E - Moment of Bloom
- 2045G - X Aura
- 1552F - Telepanting
- 1500B - Two chandeliers
- 1305E - Kuroni and the Score Distribution
- 1353F - Decreasing Heights
- 1772G - Gaining Rating
- 1808E1 - Minibuses on Venus (easy version)
- 1415E - New Game Plus!
- 1520G - To Go Or Not To Go?
- 1579G - Minimal Coverage
- 1666F - Fancy Stack
- 1158B - The minimal unique substring
- 1092D2 - Great Vova Wall (Version 2)
- 2070E - Game with Binary String
- 2072G - I've Been Flipping Numbers for 300 Years and Calculated the Sum
- 1954E - Chain Reaction
- 1627E - Not Escaping
- 1468H - K and Medians
- 1100E - Andrew and Taxi
- 2027D2 - The Endspeaker (Hard Version)
- 1398E - Two Types of Spells
- 1238E - Keyboard Purchase
- 1092D1 - Great Vova Wall (Version 1)
- 1615D - X(or)-mas Tree
- 1998E1 - Eliminating Balls With Merging (Easy Version)
- 1336C - Kaavi and Magic Spell
- 1149B - Three Religions
- 1672E - notepad.exe
- 1659E - AND-MEX Walk
- 1295E - Permutation Separation
- 1736D - Equal Binary Subsequences
- 2025E - Card Game
- 1153E - Serval and Snake
- 1045D - Interstellar battle
- 1065D - Three Pieces
- 1334E - Divisor Paths
- 2106G1 - Baudelaire (easy version)
- 1776B - Vittorio Plays with LEGO Bricks
- 1543D2 - RPD and Rap Sheet (Hard Version)
- 1399E2 - Weights Division (hard version)
- 1227E - Arson In Berland Forest
- 1635E - Cars
- 1467D - Sum of Paths
- 1535E - Gold Transfer
- 1003F - Abbreviation
- 1114E - Arithmetic Progression
2300
- 1182E - Product Oriented Recurrence
- 1188B - Count Pairs
- 1553F - Pairwise Modulo
- 1198D - Rectangle Painting 1
- 1681F - Unique Occurrences
- 1468M - Similar Sets
- 1132E - Knapsack
- 1928E - Modular Sequence
- 1167F - Scalar Queries
- 1654E - Arithmetic Operations
- 1834E - MEX of LCM
- 1550D - Excellent Arrays
- 1073E - Segment Sum
- 1093G - Multidimensional Queries
- 2069E - A, B, AB and BA
- 1712E1 - LCM Sum (easy version)
- 1849E - Max to the Right of Min
- 1977D - XORificator
- 1228E - Another Filling the Grid
- 1101G - (Zero XOR Subset)-less
- 1268C - K Integers
- 1404C - Fixed Point Removal
- 1139D - Steps to One
- 1988E - Range Minimum Sum
- 1276C - Beautiful Rectangle
- 1989E - Distance to Different
- 1706E - Qpwoeirut and Vertices
- 1699D - Almost Triple Deletions
- 1866D - Digital Wallet
- 1009F - Dominant Indices
- 2035E - Monster
- 1943C - Tree Compass
- 1270E - Divide Points
- 1552E - Colors and Intervals
- 1982E - Number of k-good subarrays
- 1691E - Number of Groups
- 1385G - Columns Swaps
- 1046I - Say Hello
- 1385F - Removing Leaves
- 1748E - Yet Another Array Counting Problem
- 2110E - Melody
- 1932G - Moving Platforms
- 1967C - Fenwick Tree
- 1601C - Optimal Insertion
- 1917D - Yet Another Inversions Problem
- 1614D2 - Divan and Kostomuksha (hard version)
- 1805E - There Should Be a Lot of Maximums
- 2002E - Cosmic Rays
- 1322C - Instant Noodles
- 1476E - Pattern Matching
- 2066C - Bitwise Slides
- 2121H - Ice Baby
- 1927G - Paint Charges
- 1015F - Bracket Substring
- 1548D1 - Gregor and the Odd Cows (Easy)
- 1783E - Game of the Year
- 1451E2 - Bitwise Queries (Hard Version)
- 1575B - Building an Amusement Park
- 1394B - Boboniu Walks on Graph
- 1695D2 - Tree Queries (Hard Version)
- 1797E - Li Hua and Array
- 1743F - Intersection and Union
- 1929E - Sasha and the Happy Tree Cutting
- 1870E - Another MEX Problem
- 1861E - Non-Intersecting Subpermutations
- 1494D - Dogeforces
- 1204E - Natasha, Sasha and the Prefix Sums
- 1190C - Tokitsukaze and Duel
- 1151F - Sonya and Informatics
- 1342E - Placing Rooks
- 1422D - Returning Home
- 1698E - PermutationForces II
- 1600F - Party Organization
- 1251E1 - Voting (Easy Version)
- 1540B - Tree Array
- 1768E - Partial Sorting
- 1658D2 - 388535 (Hard Version)
- 1148E - Earth Wind and Fire
- 2043E - Matrix Transformation
- 1675G - Sorting Pancakes
- 1995D - Cases
- 1584E - Game with Stones
- 1399F - Yet Another Segments Subset
- 2077C - Binary Subsequence Value Sum
- 2021E1 - Digital Village (Easy Version)
- 1965C - Folding Strip
- 1799E - City Union
- 1096F - Inversion Expectation
- 1085E - Vasya and Templates
- 1450C2 - Errich-Tac-Toe (Hard Version)
- 2002D2 - DFS Checker (Hard Version)
- 1411E - Poman Numbers
- 1983E - I Love Balls
- 1244F - Chips
- 2124F1 - Appending Permutations (Easy Version)
- 1245F - Daniel and Spring Cleaning
- 1156F - Card Bag
- 1842E - Tenzing and Triangle
- 1610E - AmShZ and G.O.A.T.
- 1408F - Two Different
Bonus!! Not too short, not too long (2300)
- 1310D - Tourism
- 1528C - Trees of Tranquillity
- 1070J - Streets and Avenues in Berhattan
- 1575I - Illusions of the Desert
- 1705E - Mark and Professor Koro
- 1536E - Omkar and Forest
- 1781E - Rectangle Shrinking
- 2089B2 - Canteen (Hard Version)
- 2097B - Baggage Claim
- 2057E1 - Another Exercise on Graphs (Easy Version)
- 1814E - Chain Chips
- 1628C - Grid Xor
- 1916E - Happy Life in University
- 2134E - Power Boxes
- 2006C - Eri and Expanded Sets
- 1780F - Three Chairs
- 1316E - Team Building
- 1625D - Binary Spiders
- 1203F2 - Complete the Projects (hard version)
- 1495C - Garden of the Sun
- 1621E - New School
- 2107F1 - Cycling (Easy Version)
- 1824B2 - LuoTianyi and the Floating Islands (Hard Version)
- 1693C - Keshi in Search of AmShZ
- 1919F1 - Wine Factory (Easy Version)
- 2134D - Sliding Tree
- 1592D - Hemose in ICPC ?
- 1065E - Side Transmutations
- 2068A - Condorcet Elections
- 2120E - Lanes of Cars
- 2028E - Alice's Adventures in the Rabbit Hole
- 1004D - Sonya and Matrix
- 1929F - Sasha and the Wedding Binary Search Tree
- 1914G2 - Light Bulbs (Hard Version)
- 1172C1 - Nauuo and Pictures (easy version)
- 1980G - Yasya and the Mysterious Tree
- 1864F - Exotic Queries
- 1949G - Scooter
- 2129C3 - Interactive RBS (Hard Version)
- 1607F - Robot on the Board 2
- 1603C - Extreme Extension
- 1728E - Red-Black Pepper
- 1425D - Danger of Mad Snakes
- 1878G - wxhtzdy ORO Tree
- 1304F1 - Animal Observation (easy version)
- 1513E - Cost Equilibrium
- 2063E - Triangle Tree
- 1217E - Sum Queries?
- 1798E - Multitest Generator
- 1045C - Hyperspace Highways
- 1042E - Vasya and Magic Matrix
- 1942E - Farm Game
- 1874C - Jellyfish and EVA
- 1039A - Timetable
- 2091G - Gleb and Boating
- 1282D - Enchanted Artifact
- 1895E - Infinite Card Game
- 1594E2 - Rubik's Cube Coloring (hard version)
- 1534E - Lost Array
- 1790G - Tokens on Graph
- 2041H - Sheet Music
- 1866I - Imagination Castle
- 1371E2 - Asterism (Hard Version)
- 1738E - Balance Addicts
- 1292C - Xenon's Attack on the Gangs
- 2041I - Auto Complete
- 1254C - Point Ordering
- 1252L - Road Construction
- 1239C - Queue in the Train
- 1250G - Discarding Game
2400
- 1051F - The Shortest Statement
- 932E - Team Work
- 1036E - Covered Points
- 1726E - Almost Perfect
- 915F - Imbalance Value of a Tree
- 1777F - Comfortably Numb
- 1792E - Divisors and Table
- 1585F - Non-equal Neighbours
- 1485F - Copy or Prefix Sum
- 1638E - Colorful Operations
- 1132G - Greedy Subsequences
- 1527D - MEX Tree
- 1423J - Bubble Cup hypothesis
- 922F - Divisibility
- 1114F - Please, another Queries on Array?
- 1619H - Permutation and Queries
- 1374F - Cyclic Shifts Sorting
- 2005D - Alter the GCD
- 912E - Prime Gift
- 1187D - Subarray Sorting
- 959F - Mahmoud and Ehab and yet another xor task
- 1083E - The Fair Nut and Rectangles
- 1874B - Jellyfish and Math
- 990G - GCD Counting
- 1045B - Space Isaac
- 1146E - Hot is Cold
- 1401E - Divide Square
- 1059E - Split the Tree
- 1592E - Bored Bakry
- 1401F - Reverse and Swap
- 1007B - Pave the Parallelepiped
- 1182D - Complete Mirror
- 1093F - Vasya and Array
- 1042F - Leaf Sets
- 1817C - Similar Polynomials
- 1764E - Doremy's Number Line
- 1473E - Minimum Path
- 1482F - Useful Edges
- 1979E - Manhattan Triangle
- 962F - Simple Cycles Edges
- 1634E - Fair Share
- 1455E - Four Points
- 1186F - Vus the Cossack and a Graph
- 1036F - Relatively Prime Powers
- 1981D - Turtle and Multiplication
- 1428F - Fruit Sequences
- 1667C - Half Queen Cover
- 1028E - Restore Array
- 1491E - Fib-tree
- 1902F - Trees and XOR Queries Again
- 2032E - Balanced
- 946F - Fibonacci String Subsequences
- 1107E - Vasya and Binary String
- 1957E - Carousel of Combinations
- 1715E - Long Way Home
- 1202E - You Are Given Some Strings...
- 1670F - Jee, You See?
- 914E - Palindromes in a Tree
- 911F - Tree Destruction
- 1969E - Unique Array
- 1594F - Ideal Farm
- 1032F - Vasya and Maximum Matching
- 1088E - Ehab and a component choosing problem
- 1096G - Lucky Tickets
- 1184E3 - Daleks' Invasion (hard)
- 2110F - Faculty
- 1706D2 - Chopping Carrots (Hard Version)
- 1732D2 - Balance (Hard version)
- 1000F - One Occurrence
- 1093E - Intersection of Permutations
- 1780G - Delicious Dessert
- 1027F - Session in BSU
- 1794E - Labeling the Tree with Distances
- 1709E - XOR Tree
- 1827B2 - Range Sorting (Hard Version)
- 1082G - Petya and Graph
- 1761E - Make It Connected
- 2122D - Traffic Lights
- 1523D - Love-Hate
- 1147D - Palindrome XOR
- 906C - Party
- 1221F - Choose a Square
- 1913E - Matrix Problem
- 1633E - Spanning Tree Queries
- 1575M - Managing Telephone Poles
- 1697E - Coloring
- 2030F - Orangutan Approved Subarrays
- 1632E1 - Distance Tree (easy version)
- 2109E - Binary String Wowee
- 1943D1 - Counting Is Fun (Easy Version)
- 1795F - Blocking Chips
- 1257F - Make Them Similar
- 1844E - Great Grids
- 1620G - Subsequences Galore
- 1499F - Diameter Cuts
- 2086E - Zebra-like Numbers
- 1442C - Graph Transpositions
- 1494E - A-Z Graph
- 1142C - U2
- 1887C - Minimum Array
Bonus!! Not too short, not too long (2400)
- 1091E - New Year and the Acquaintance Estimation
- 1720D2 - Xor-Subsequence (hard version)
- 1605E - Array Equalizer
- 1886E - I Wanna be the Team Leader
- 1630D - Flipping Range
- 1582F2 - Korney Korneevich and XOR (hard version)
- 913E - Logical Expression
- 1707C - DFS Trees
- 1163E - Magical Permutation
- 1016E - Rest In The Shades
- 1038E - Maximum Matching
- 916E - Jamie and Tree
- 1290C - Prefix Enlightenment
- 1044D - Deduction Queries
- 1839E - Decreasing Game
- 1848F - Vika and Wiki
- 1832D2 - Red-Blue Operations (Hard Version)
- 1780E - Josuke and Complete Graph
- 1830C - Hyperregular Bracket Strings
- 1736C2 - Good Subarrays (Hard Version)
- 1242C - Sum Balance
- 1526E - Oolimry and Suffix Array
- 1089K - King Kog's Reception
- 1251E2 - Voting (Hard Version)
- 2126G2 - Big Wins! (hard version)
- 1070I - Privatization of Roads in Berland
- 1005E2 - Median on Segments (General Case Edition)
- 1080F - Katya and Segments Sets
- 1606D - Red-Blue Matrix
- 1436E - Complicated Computations
- 1909E - Multiple Lamps
- 1348E - Phoenix and Berries
- 1774F1 - Magician and Pigs (Easy Version)
- 1819C - The Fox and the Complete Tree Traversal
- 1542E1 - Abnormal Permutation Pairs (easy version)
- 2096E - Wonderful Teddy Bears
- 1809E - Two Tanks
- 1174F - Ehab and the Big Finale
- 1598F - RBS
- 2023C - C+K+S
- 2111F - Puzzle
- 1868C - Travel Plan
- 1608D - Dominoes
- 2118E - Grid Coloring
- 908F - New Year and Rainbow Roads
- 1749E - Cactus Wall
- 1326E - Bombs
- 1408E - Avoid Rainbow Cycles
- 1609E - William The Oblivious
- 1930E - 2..3...4.... Wonderful! Wonderful!
- 1101F - Trucks and Cities
- 1852C - Ina of the Mountain
- 1239D - Catowice City
- 1713E - Cross Swapping
- 1934D2 - XOR Break --- Game Version
- 2060G - Bugged Sort
- 1080E - Sonya and Matrix Beauty
- 2038D - Divide OR Conquer
- 1469E - A Bit Similar
- 1743E - FTL
- 929D - Пограничные врата
- 1978F - Large Graph
- 1984E - Shuffle
- 1106F - Lunar New Year and a Recursive Sequence
- 1628D2 - Game on Sum (Hard Version)
- 1626E - Black and White Tree
- 1905E - One-X
- 1418E - Expected Damage
- 2049E - Broken Queries
- 920D - Tanks
- 1045H - Self-exploration
- 1369E - DeadLee
- 1343F - Restore the Permutation by Sorted Segments
- 1725L - Lemper Cooking Competition
- 1617D2 - Too Many Impostors (hard version)
- 1329C - Drazil Likes Heap
- 2084E - Blossom
- 1935E - Distance Learning Courses in MAC
- 1373F - Network Coverage
- 1826E - Walk the Runway
- 1784D - Wooden Spoon
- 1936C - Pokémon Arena
- 1860E - Fast Travel Text Editor
- 1710E - Two Arrays
- 1090C - New Year Presents
- 1061F - Lost Root
- 1866L - Lihmuf Balling
- 1358E - Are You Fired?
- 1129C - Morse Code
- 1055D - Refactoring
- 1107G - Vasya and Maximum Profit
- 1837F - Editorial for Two
- 1499E - Chaotic Merge
- 1098C - Construct a tree
- 1210D - Konrad and Company Evaluation
- 1924C - Fractal Origami
- 1166F - Vicky's Delivery Service
- 1718C - Tonya and Burenka-179
- 1367F2 - Flying Sort (Hard Version)
- 1750E - Bracket Cost
2500
- 1513F - Swapping Problem
- 909F - AND-permutations
- 1917F - Construct Tree
- 911G - Mass Change Queries
- 1983F - array-value
- 986C - AND Graph
- 1117G - Recursive Queries
- 1773I - Interactive Factorial Guessing
- 1701F - Points
- 2113F - Two Arrays
- 1665E - MinimizOR
- 1468I - Plane Tiling
- 923D - Picking Strings
- 1521D - Nastia Plays with a Tree
- 2026E - Best Subsequence
- 1771F - Hossam and Range Minimum Query
- 1198E - Rectangle Painting 2
- 1175F - The Number of Subpermutations
- 1917E - Construct Matrix
- 1188C - Array Beauty
- 1824C - LuoTianyi and XOR-Tree
- 1712E2 - LCM Sum (hard version)
- 1418G - Three Occurrences
- 908E - New Year and Entity Enumeration
- 963D - Frequency of String
- 1467E - Distinctive Roots in a Tree
- 1710C - XOR Triangle
- 1516E - Baby Ehab Plays with Permutations
- 1327F - AND Segments
- 2071D2 - Infinite Sequence (Hard Version)
- 1946F - Nobody is needed
- 1842F - Tenzing and Tree
- 1838E - Count Supersequences
- 946G - Almost Increasing Array
- 1043F - Make It One
- 1948F - Rare Coins
- 1987F1 - Interesting Problem (Easy Version)
- 1789E - Serval and Music Game
- 954H - Path Counting
- 1731F - Function Sum
- 1986G2 - Permutation Problem (Hard Version)
- 976F - Minimal k-covering
- 1951F - Inversion Composition
- 2075E - XOR Matrix
- 1209E2 - Rotate Columns (hard version)
- 1055E - Segments on the Line
- 1859E - Maximum Monogonosity
- 1497D - Genius
- 1037F - Maximum Reduction
- 1854C - Expected Destruction
- 1572B - Xor of 3
- 1866K - Keen Tree Calculation
- 1527E - Partition Game
- 1497E2 - Square-Free Division (hard version)
- 1174E - Ehab and the Expected GCD Problem
- 1492E - Almost Fault-Tolerant Database
- 1111E - Tree
- 1481E - Sorting Books
- 1146F - Leaf Partition
- 1909F2 - Small Permutation Problem (Hard Version)
- 1305F - Kuroni and the Punishment
- 1325F - Ehab's Last Theorem
- 1847F - The Boss's Identity
- 1716F - Bags with Balls
- 1187F - Expected Square Beauty
- 1990E1 - Catch the Mole(Easy Version)
- 1922F - Replace on Segment
- 1550E - Stringforces
- 1734F - Zeros and Ones
- 1427E - Xum
- 1858E1 - Rollbacks (Easy Version)
- 1228F - One Node is Gone
- 1612G - Max Sum Array
- 1994F - Stardew Valley
- 1398F - Controversial Rounds
- 2117H - Incessant Rain
- 2029F - Palindrome Everywhere
- 1637F - Towers
- 1065F - Up and Down the Tree
- 1984F - Reconstruction
- 1691F - K-Set Tree
- 1559D2 - Mocha and Diana (Hard Version)
- 1788F - XOR, Tree, and Queries
- 1661E - Narrow Components
- 1783F - Double Sort II
- 976D - Degree Set
- 1796E - Colored Subgraphs
- 1556F - Sports Betting
- 1548C - The Three Little Pigs
- 1845E - Boxes and Balls
- 2081B - Balancing
- 2048F - Kevin and Math Class
- 1438E - Yurii Can Do Everything
- 1906K - Deck-Building Game
- 1253F - Cheap Robot
- 1717F - Madoka and The First Session
- 1221E - Game With String
- 1666E - Even Split
- 1375E - Inversion SwapSort
- 1139F - Dish Shopping
Bonus!! Not too short, not too long (2500)
- 1354F - Summoning Minions
- 1840G2 - In Search of Truth (Hard Version)
- 1539E - Game with Cards
- 1814D - Balancing Weapons
- 1903D2 - Maximum And Queries (hard version)
- 2125E - Sets of Complementary Sums
- 1117F - Crisp String
- 1689E - ANDfinity
- 1334F - Strange Function
- 2133E - I Yearned For The Mines
- 1835B - Lottery
- 981G - Magic multisets
- 2021E2 - Digital Village (Hard Version)
- 995D - Game
- 1904E - Tree Queries
- 1767E - Algebra Flash
- 1574E - Coloring
- 1284E - New Year and Castle Construction
- 1195F - Geometers Anonymous Club
- 1903F - Babysitting
- 1508C - Complete the MST
- 1218E - Product Tuples
- 1444C - Team-Building
- 1918F - Caterpillar on a Tree
- 981F - Round Marriage
- 1313D - Happy New Year
- 1073F - Choosing Two Paths
- 997C - Sky Full of Stars
- 1517E - Group Photo
- 958C3 - Encryption (hard)
- 1809F - Traveling in Berland
- 1778E - The Tree Has Fallen!
- 1452E - Two Editorials
- 1973E - Cat, Fox and Swaps
- 1764F - Doremy's Experimental Tree
- 1779F - Xorcerer's Stones
- 1687C - Sanae and Giant Robot
- 1808E2 - Minibuses on Venus (medium version)
- 2057E2 - Another Exercise on Graphs (hard version)
- 1823E - Removing Graph
- 1798F - Gifts from Grandfather Ahmed
- 1776I - Spinach Pizza
- 1041F - Ray in the tube
- 1725J - Journey
- 1137C - Museums Tour
- 930D - Game with Tokens
- 1332F - Independent Set
- 2056E - Nested Segments
- 1420E - Battle Lemmings
- 1076F - Summer Practice Report
- 993D - Compute Power
- 1100F - Ivan and Burgers
- 1470C - Strange Shuffle
- 1787F - Inverse Transformation
- 1188A2 - Add on a Tree: Revolution
- 992E - Nastya and King-Shamans
- 1017F - The Neutral Zone
- 1361C - Johnny and Megan's Necklace
- 1956E1 - Nene vs. Monsters (Easy Version)
- 1891E - Brukhovich and Exams
- 1746E1 - Joking (Easy Version)
- 1758E - Tick, Tock
- 1423H - Virus
- 1998E2 - Eliminating Balls With Merging (Hard Version)
- 1485E - Move and Swap
- 2101D - Mani and Segments
- 1120D - Power Tree
- 1583F - Defender of Childhood Dreams
- 924D - Contact ATC
- 1474E - What Is It?
- 2106G2 - Baudelaire (hard version)
- 1374E2 - Reading Books (hard version)
- 1381C - Mastermind
- 1771E - Hossam and a Letter
- 1673E - Power or XOR?
- 1498F - Christmas Game
- 2038F - Alternative Platforms
- 1320D - Reachable Strings
- 1186E - Vus the Cossack and a Field
- 1725E - Electrical Efficiency
- 1236E - Alice and the Unfair Game
- 1677D - Tokitsukaze and Permutations
- 2005E2 - Subtangle Game (Hard Version)
- 2059E1 - Stop Gaming (Easy Version)
- 989D - A Shade of Moonlight
- 1301E - Nanosoft
- 1585G - Poachers
- 1368E - Ski Accidents
- 1701E - Text Editor
- 1906L - Palindromic Parentheses
- 1611G - Robot and Candies
- 1468G - Hobbits
- 1479C - Continuous City
- 2021D - Boss, Thirsty
- 1239B - The World Is Just a Programming Task (Hard Version)
- 2022E1 - Billetes MX (Easy Version)
- 1716E - Swap and Maximum Block
- 1658E - Gojou and Matrix Game
- 2035F - Tree Operations
- 1562E - Rescue Niwen!
2600
- 1208F - Bits And Pieces
- 1493E - Enormous XOR
- 1486F - Pairs of Paths
- 2081D - MST in Modulo Graph
- 1120E - The very same Munchhausen
- 1762F - Good Pairs
- [problem:802C]
- 1325E - Ehab's REAL Number Theory Problem
- 1584F - Strange LCS
- 2131H - Sea, You & copriMe
- 1656F - Parametric MST
- 1815D - XOR Counting
- 935F - Fafa and Array
- 955F - Heaps
- 1895F - Fancy Arrays
- 1257G - Divisor Set
- 1073G - Yet Another LCP Problem
- 2064F - We Be Summing
- 2042F - Two Subarrays
- 1736E - Swap and Take
- 1348F - Phoenix and Memory
- 1994G - Minecraft
- 2104F - Numbers and Strings
- 1680F - Lenient Vertex Cover
- 1270F - Awesome Substrings
- 1278F - Cards
- 2119E - And Constraint
- 2045J - Xorderable Array
- 1987F2 - Interesting Problem (Hard Version)
- 1495D - BFS Trees
- 1227G - Not Same
- 1067C - Knights
- 1439B - Graph Subset Problem
- 1389F - Bicolored Segments
- 1599A - Weights
- 1704F - Colouring Game
- 1799G - Count Voting
- 1773D - Dominoes
- 1661F - Teleporters
- 1827C - Palindrome Partition
- 914G - Sum the Fibonacci
- 1326F1 - Wise Men (Easy Version)
- 1981E - Turtle and Intersected Segments
- 1430G - Yet Another DAG Problem
- 1503D - Flip the Cards
- 1975F - Set
- 1613F - Tree Coloring
- 940F - Machine Learning
- 1027G - X-mouse in the Campus
- 1696F - Tree Recovery
- 1990E2 - Catch the Mole(Hard Version)
- 1919E - Counting Prefixes
- 1439C - Greedy Shopping
- 1957F1 - Frequency Mismatch (Easy Version)
- 1858E2 - Rollbacks (Hard Version)
- 1685C - Bring Balance
- 925D - Aztec Catacombs
- 1406E - Deleting Numbers
- 1844F1 - Min Cost Permutation (Easy Version)
- 1301F - Super Jaber
- 1217F - Forced Online Queries Problem
- 1566F - Points Movement
- 1905F - Field Should Not Be Empty
- 1945H - GCD is Greater
- 1089I - Interval-Free Permutations
- 1889C2 - Doremy's Drying Plan (Hard Version)
- 1793F - Rebrending
- 1237F - Balanced Domino Placements
- 1554E - You
- 1523E - Crypto Lights
- 1140F - Extending Set of Points
- 1031E - Triple Flips
- 1823F - Random Walk
- 813D - Two Melodies
- 848C - Goodbye Souvenir
- 1446D1 - Frequency Problem (Easy Version)
- 2122E - Greedy Grid Counting
- 1906B - Button Pressing
- 919F - A Game With Numbers
- 2071E - LeaFall
- 1699E - Three Days Grace
- 955D - Scissors
- 1070L - Odd Federalization
- 1515F - Phoenix and Earthquake
- 1657F - Words on Tree
- 1209F - Koala and Notebook
- 2004F - Make a Palindrome
- 1500C - Matrix Sorting
- 1363F - Rotating Substrings
- 1416D - Graph and Queries
- 1004F - Sonya and Bitwise OR
- 1982F - Sorting Problem Again
- 811E - Vladik and Entertaining Flags
- 1805F1 - Survival of the Weakest (easy version)
- 883B - Berland Army
- 1510B - Button Lock
- 1051E - Vasya and Big Integers
- 2003E1 - Turtle and Inversions (Easy Version)
- 1739F - Keyboard Design
- 1778F - Maximizing Root
Bonus!! Not too short, not too long (2600)
- 1651E - Sum of Matchings
- 1684F - Diverse Segments
- 1090J - Two Prefixes
- 963C - Cutting Rectangle
- 2002F1 - Court Blue (Easy Version)
- 1375F - Integer Game
- 1380F - Strange Addition
- 2128E2 - Submedians (Hard Version)
- 1530F - Bingo
- 1400G - Mercenaries
- 2107E - Ain and Apple Tree
- 1700F - Puzzle
- 896C - Willem, Chtholly and Seniorious
- 1740F - Conditional Mix
- 1153F - Serval and Bonus Problem
- 818G - Four Melodies
- 2085F1 - Serval and Colorful Array (Easy Version)
- 1423L - Light switches
- 1539F - Strange Array
- 1391E - Pairs of Pairs
- 982E - Billiard
- 1218C - Jumping Transformers
- 1793E - Velepin and Marketing
- 2103E - Keep the Sum
- 1355F - Guess Divisors Count
- 1394C - Boboniu and String
- 1045J - Moonwalk challenge
- 1582G - Kuzya and Homework
- 917D - Stranger Trees
- 1373G - Pawns
- 1977E - Tensor
- 2129D - Permutation Blackhole
- 2053F - Earnest Matrix Complement
- 1312G - Autocompletion
- 1437F - Emotional Fishermen
- 1580B - Mathematics Curriculum
- 1178F2 - Long Colorful Strip
- 1863F - Divide, XOR, and Conquer
- 1614E - Divan and a Cottage
- 958F3 - Lightsabers (hard)
- 1575E - Eye-Pleasing City Park Tour
- 1061E - Politics
- 843C - Upgrading Tree
- 1107F - Vasya and Endless Credits
- 1773H - Hot and Cold
- 1835C - Twin Clusters
- 1267I - Intriguing Selection
- 1081F - Tricky Interactor
- 1821F - Timber
- 1437G - Death DBMS
- 1469F - Power Sockets
- 1354G - Find a Gift
- 1893D - Colorful Constructive
- 1111D - Destroy the Colony
- 875E - Delivery Club
- 1172C2 - Nauuo and Pictures (hard version)
- 1536F - Omkar and Akmar
- 1700E - Serega the Pirate
- 1592F1 - Alice and Recoloring 1
- 1599J - Bob's Beautiful Array
- 1185G2 - Playlist for Polycarp (hard version)
- 2109C3 - Hacking Numbers (Hard Version)
- 1762E - Tree Sum
- 1466G - Song of the Sirens
- 1949D - Funny or Scary?
- 1949J - Amanda the Amoeba
- 1091F - New Year and the Mallard Expedition
- 1765G - Guess the String
- 2103F - Maximize Nor
- 1380G - Circular Dungeon
- 1898F - Vova Escapes the Matrix
- 2006D - Iris and Adjacent Products
- 975E - Hag's Khashba
- 2022E2 - Billetes MX (Hard Version)
- 1679F - Formalism for Formalism
- 1110F - Nearest Leaf
- 1223F - Stack Exterminable Arrays
- 1264D1 - Beautiful Bracket Sequence (easy version)
- 1493F - Enchanted Matrix
- 1023F - Mobile Phone Network
- 1765C - Card Guessing
- 1681E - Labyrinth Adventures
- 1896F - Bracket Xoring
- 832E - Vasya and Shifts
- 1970D2 - Arithmancy (Medium)
- 1430F - Realistic Gameplay
- 1398G - Running Competition
- 814E - An unavoidable detour for home
- 2132G - Famous Choreographer
- 1425B - Blue and Red of Our Faculty!
- 1558D - Top-Notch Insertions
- 2108E - Spruce Dispute
- 809C - Find a car
- 1016F - Road Projects
2700
- 1182F - Maximum Sine
- 1671F - Permutation Counting
- 995E - Number Clicker
- 1270G - Subset with Zero Sum
- 938F - Erasing Substrings
- 1730E - Maximums and Minimums
- 1599G - Shortest path
- 958E3 - Guard Duty (hard)
- 1599I - Desert
- 1918G - Permutation of Given
- 2071F - Towering Arrays
- 1930F - Maximize the Difference
- 1641D - Two Arrays
- 2028F - Alice's Adventures in Addition
- 1521E - Nastia and a Beautiful Matrix
- 870F - Paths
- 1205D - Almost All
- 1202F - You Are Given Some Letters...
- 1473F - Strange Set
- 1942F - Farmer John's Favorite Function
- 961F - k-substrings
- 1019D - Large Triangle
- 1025F - Disjoint Triangles
- 1194G - Another Meme Problem
- 1260F - Colored Tree
- 827D - Best Edge Weight
- 1555F - Good Graph
- 985G - Team Players
- 1065G - Fibonacci Suffix
- 2025F - Choose Your Queries
- 1887D - Split
- 1849F - XOR Partition
- 2081C - Quaternary Matrix
- 901D - Weighting a Tree
- 1364E - X-OR
- 932F - Escape Through Leaf
- 1303G - Sum of Prefix Sums
- 1599F - Mars
- 982F - The Meeting Place Cannot Be Changed
- 1916H2 - Matrix Rank (Hard Version)
- 1916H1 - Matrix Rank (Easy Version)
- 1487G - String Counting
- 1924D - Balanced Subsequences
- 1146G - Zoning Restrictions
- 1730F - Almost Sorted
- 1366F - Jog Around The Graph
- 1672H - Zigu Zagu
- 1572C - Paint
- 1957F2 - Frequency Mismatch (Hard Version)
- 1720E - Misha and Paintings
- 1567F - One-Four Overload
- 1621F - Strange Instructions
- 933C - A Colourful Prospect
- 961G - Partitions
- 1634F - Fibonacci Additions
- 1814F - Communication Towers
- 1632E2 - Distance Tree (hard version)
- 1118F2 - Tree Cutting (Hard Version)
- 1867F - Most Different Tree
- 924E - Wardrobe
- 868E - Policeman and a Tree
- 1120B - Once in a casino
- 827E - Rusty String
- 1421E - Swedish Heroes
- 1515G - Phoenix and Odometers
- 1016G - Appropriate Team
- 1388E - Uncle Bogdan and Projections
- 1422E - Minlexes
- 2068H - Statues
- 1366G - Construct the String
- 1254D - Tree Queries
- 1728G - Illumination
- 2049F - MEX OR Mania
- 1574F - Occurrences
- 1408G - Clusterization Counting
- 1795G - Removal Sequences
- 2009G3 - Yunli's Subarray Queries (extreme version)
- 839E - Mother of Dragons
- 1148F - Foo Fighters
- 2040F - Number of Cubes
- 1799F - Halve or Subtract
- 1856E2 - PermuTree (hard version)
- 1553G - Common Divisor Graph
- 1000G - Two-Paths
- 995F - Cowmpany Cowmpensation
- 2003E2 - Turtle and Inversions (Hard Version)
- 1603F - October 18, 2017
- 1789F - Serval and Brain Power
- 1774F2 - Magician and Pigs (Hard Version)
- 1109E - Sasha and a Very Easy Test
- 1542E2 - Abnormal Permutation Pairs (hard version)
- 1313E - Concatenation with intersection
- 2026F - Bermart Ice Cream
- 1422F - Boring Queries
- 1817D - Toy Machine
- 1627F - Not Splitting
- 2077E - Another Folding Strip
- 1468L - Prime Divisors Selection
- 1461F - Mathematical Expression
- 906D - Power Tower
Bonus!! Not too short, not too long (2700)
- 1336E1 - Chiori and Doll Picking (easy version)
- 2013F1 - Game in Tree (Easy Version)
- 1207G - Indie Album
- 1514E - Baby Ehab's Hyper Apartment
- 1658F - Juju and Binary String
- 878C - Tournament
- 1450E - Capitalism
- 1411G - No Game No Life
- 1025E - Colored Cubes
- 2056F1 - Xor of Median (Easy Version)
- 1991G - Grid Reset
- 903G - Yet Another Maxflow Problem
- 1372F - Omkar and Modes
- 1995E1 - Let Me Teach You a Lesson (Easy Version)
- 958D2 - Hyperspace Jump (hard)
- 1601D - Difficult Mountain
- 1338D - Nested Rubber Bands
- 1264E - Beautiful League
- 1733E - Conveyor
- 1103C - Johnny Solving
- 1453F - Even Harder
- 991F - Concise and clear
- 1036G - Sources and Sinks
- 1179D - Fedor Runs for President
- 1792F1 - Graph Coloring (easy version)
- 1715F - Crop Squares
- 1682F - MCMF?
- 838D - Airplane Arrangements
- 1519E - Off by One
- 1540C1 - Converging Array (Easy Version)
- 833C - Ever-Hungry Krakozyabra
- 1295F - Good Contest
- 1379F1 - Chess Strikes Back (easy version)
- 1452G - Game On Tree
- 1781F - Bracket Insertion
- 1010E - Store
- 2115C - Gellyfish and Eternal Violet
- 1956E2 - Nene vs. Monsters (Hard Version)
- 1695E - Ambiguous Dominoes
- 1682E - Unordered Swaps
- 1369F - BareLee
- 1044F - DFS
- 1841F - Monocarp and a Strategic Game
- 1423F - Coins
- 1370F2 - The Hidden Pair (Hard Version)
- 1034C - Region Separation
- 1993E - Xor-Grid Problem
- 1458C - Latin Square
- 1358F - Tasty Cookie
- 1140G - Double Tree
- 1804F - Approximate Diameter
- 1149C - Tree Generator™
- 1220F - Gardener Alex
- 1511G - Chips on a Board
- 860E - Arkady and a Nobody-men
- 949E - Binary Cards
- 2104G - Modulo 3
- 1550F - Jumping Around
- 1137E - Train Car Selection
- 1750F - Majority
- 1423E - 5G Antenna Towers
- 1617E - Christmas Chocolates
- 1210E - Wojtek and Card Tricks
- 1451F - Nullify The Matrix
- 1292D - Chaotic V.
- 1510J - Japanese Game
- 1491F - Magnets
- 1156G - Optimizer
- 1510I - Is It Rated?
- 1997F - Chips on a Line
- 1197F - Coloring Game
- 2045E - Narrower Passageway
- 2032F - Peanuts
- 2043F - Nim
- 864F - Cities Excursions
- 989E - A Trance of Nightfall
- 1511F - Chainword
- 1801F - Another n-dimensional chocolate bar
- 1054F - Electric Scheme
- 1131G - Most Dangerous Shark
2800
- 908G - New Year and Original Order
- 1436F - Sum Over Subsets
- 1863G - Swaps
- 1746F - Kazaee
- 1442D - Sum
- 1208G - Polygons
- 1067E - Random Forest Rank
- 819E - Mister B and Flight to the Moon
- [problem:802F]
- 1031F - Familiar Operations
- 1039D - You Are Given a Tree
- 1609F - Interesting Sections
- 1012D - AB-Strings
- 1732E - Location
- 1693D - Decinc Dividing
- 1698F - Equal Reversal
- 1990F - Polygonal Segments
- 736D - Permutations
- 1620F - Bipartite Array
- 830D - Singer House
- 1672F2 - Checker for Array Shuffling
- 1697F - Too Many Constraints
- 1685D1 - Permutation Weight (Easy Version)
- 1383E - Strange Operation
- 983E - NN country
- 1635F - Closest Pair
- 2048G - Kevin and Matrices
- 1904F - Beautiful Tree
- 1852D - Miriany and Matchstick
- 1949K - Make Triangle
- 1088F - Ehab and a weird weight formula
- 1327G - Letters and Question Marks
- 1842G - Tenzing and Random Operations
- 1404E - Bricks
- 1404D - Game of Pairs
- 1684G - Euclid Guess
- 1967D - Long Way to be Non-decreasing
- 1626F - A Random Code Problem
- 1844F2 - Min Cost Permutation (Hard Version)
- 1491G - Switch and Flip
- 1943D2 - Counting Is Fun (Hard Version)
- 1365G - Secure Password
- 850F - Rainbow Balls
- 1608E - The Cells on the Paper
- 1310C - Au Pont Rouge
- 2003F - Turtle and Three Sequences
- 850D - Tournament Construction
- 1749F - Distance to the Path
- 1923F - Shrink-Reverse
- 838C - Future Failure
- 1830D - Mex Tree
- 1654F - Minimal String Xoration
- 722F - Cyclic Cipher
- 838F - Expected Earnings
- 1913F - Palindromic Problem
- 1826F - Fading into Fog
- 1303F - Number of Components
- 762F - Tree nesting
- 1510F - Fiber Shape
- 1400F - x-prime Substrings
- 1827D - Two Centroids
- 1606F - Tree Queries
- 1279F - New Year and Handle Change
- 842E - Nikita and game
- 1976F - Remove Bridges
- 2027E1 - Bit Game (Easy Version)
- 1783G - Weighed Tree Radius
- 1578A - Anti-Tetris
- 962G - Visible Black Areas
- 1082F - Speed Dial
- 1375G - Tree Modification
- 1389G - Directing Edges
- 2127F - Hamed and AghaBalaSar
- 2002F2 - Court Blue (Hard Version)
- 2069F - Graph Inclusion
- 1572D - Bridge Club
- 2021E3 - Digital Village (Extreme Version)
- 1152F1 - Neko Rules the Catniverse (Small Version)
- 1218A - BubbleReactor
- 2039F1 - Shohag Loves Counting (Easy Version)
- 869D - The Overdosing Ubiquity
- 1477D - Nezzar and Hidden Permutations
- 2124F2 - Appending Permutations (Hard Version)
- 1773G - Game of Questions
- 1935F - Andrey's Tree
- 1766F - MCF
- 1423M - Milutin's Plums
- 1845F - Swimmers in the Pool
- 1578B - Building Forest Trails
- 1879F - Last Man Standing
- 1866J - Jackets and Packets
- 1214H - Tiles Placement
- 1394D - Boboniu and Jianghu
- 887E - Little Brother
- 1942G - Bessie and Cards
- 815D - Karen and Cards
- 1808E3 - Minibuses on Venus (hard version)
- 2112F - Variables and Operations
- 1612F - Armor and Weapons
- 1721F - Matching Reduction
Bonus!! Not too short, not too long (2800)
- 1033E - Hidden Bipartite Graph
- 859F - Ordering T-Shirts
- 833D - Red-Black Cobweb
- 1906D - Spaceship Exploration
- 986E - Prince's Problem
- 1919F2 - Wine Factory (Hard Version)
- 1425I - Impressive Harvesting of The Orchard
- 1379E - Inverse Genealogy
- 1419F - Rain of Fire
- 2055E - Haystacks
- 2052G - Geometric Balance
- 1809G - Prediction
- 1379F2 - Chess Strikes Back (hard version)
- 1155F - Delivery Oligopoly
- 794F - Leha and security system
- 1776D - Teamwork
- 1884E - Hard Design
- 1413F - Roads and Ramen
- 1993F2 - Dyn-scripted Robot (Hard Version)
- 1592F2 - Alice and Recoloring 2
- 776F - Sherlock's bet to Moriarty
- 1383D - Rearrange
- 1578K - Kingdom of Islands
- 2097D - Homework
- 2038M - Royal Flush
- 702F - T-Shirts
- 1615F - LEGOndary Grandmaster
- 1874D - Jellyfish and Miku
- 1473G - Tiles
- 2107F2 - Cycling (Hard Version)
- 1810F - M-tree
- 2031F - Penchick and Even Medians
- 750F - New Year and Finding Roots
- 850E - Random Elections
- 794E - Choosing Carrot
- 1545C - AquaMoon and Permutations
- 2034F2 - Khayyam's Royal Decree (Hard Version)
- 1098D - Eels
- 1900F - Local Deletions
- 2113E - From Kazan with Love
- 1286C2 - Madhouse (Hard version)
- 1648D - Serious Business
- 717I - Cowboy Beblop at his computer
- 1633F - Perfect Matching
- 1371F - Raging Thunder
- 1316F - Battalion Strength
- 1109C - Sasha and a Patient Friend
- 1142D - Foreigner
2900
- 1285F - Classical?
- 1129D - Isolation
- 932G - Palindrome Partition
- 1768F - Wonderful Jump
- 1266F - Almost Same Distance
- 1487F - Ones
- [problem:802O]
- 1146H - Satanic Panic
- 871E - Restore the Tree
- 1677E - Tokitsukaze and Beautiful Subsegments
- 1810H - Last Number
- 1667D - Edge Elimination
- 1622F - Quadratic Set
- 1198F - GCD Groups 2
- 1553H - XOR and Distance
- 886F - Symmetric Projections
- 1773J - Jumbled Trees
- 980F - Cactus to Tree
- 1747E - List Generation
- 1616F - Tricolor Triangles
- 2062F - Traveling Salescat
- 1738G - Anti-Increasing Addicts
- 1310E - Strange Function
- 1580D - Subsequence
- 1796F - Strange Triples
- 741D - Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths
- 1028H - Make Square
- 1032G - Chattering
- 1705F - Mark and the Online Exam
- 1028F - Make Symmetrical
- 1870F - Lazy Numbers
- 1806F2 - GCD Master (hard version)
- 1806F1 - GCD Master (easy version)
- 1452F - Divide Powers
- 1221G - Graph And Numbers
- 1218H - Function Composition
- 1038F - Wrap Around
- 1372E - Omkar and Last Floor
- 1965D - Missing Subarray Sum
- 1030G - Linear Congruential Generator
- 1687D - Cute number
- 724E - Goods transportation
- 1060F - Shrinking Tree
- 1578F - Framing Pictures
- 1444D - Rectangular Polyline
- 1085G - Beautiful Matrix
- 1455G - Forbidden Value
- 878D - Magic Breeding
- 1605F - PalindORme
- 1334G - Substring Search
- 2115D - Gellyfish and Forget-Me-Not
- 1860F - Evaluate RBS
- 1735F - Pebbles and Beads
- 2042E - Vertex Pairs
- 1630E - Expected Components
- 938G - Shortest Path Queries
- 815E - Karen and Neighborhood
- 2020F - Count Leaves
- 1083C - Max Mex
- 2045K - GCDDCG
- 1428G1 - Lucky Numbers (Easy Version)
- 1276D - Tree Elimination
- 1479D - Odd Mineral Resource
- 718D - Andrew and Chemistry
- 1646F - Playing Around the Table
- 1949E - Damage per Second
- 960G - Bandit Blues
- 2111G - Divisible Subarrays
- 862F - Mahmoud and Ehab and the final stage
- 2018F1 - Speedbreaker Counting (Easy Version)
- 1494F - Delete The Edges
- 2134F - Permutation Oddness
- 2108F - Fallen Towers
- 1713F - Lost Array
- 1500D - Tiles for Bathroom
- 1698G - Long Binary String
- 1062F - Upgrading Cities
- 1415F - Cakes for Clones
- 2085F2 - Serval and Colorful Array (Hard Version)
- 736E - Chess Championship
- 1995E2 - Let Me Teach You a Lesson (Hard Version)
- 1654G - Snowy Mountain
- 933D - A Creative Cutout
- 930E - Coins Exhibition
- 2092F - Andryusha and CCB
- 776G - Sherlock and the Encrypted Data
- 896D - Nephren Runs a Cinema
- 763D - Timofey and a flat tree
- 1288F - Red-Blue Graph
- 1510C - Cactus Not Enough
- 1051G - Distinctification
- 1792F2 - Graph Coloring (hard version)
- 1055F - Tree and XOR
- 2084F - Skyscape
- 1906G - Grid Game 2
- 2061G - Kevin and Teams
- 1540C2 - Converging Array (Hard Version)
- 1764G1 - Doremy's Perfect DS Class (Easy Version)
- 809D - Hitchhiking in the Baltic States
- 2030G1 - The Destruction of the Universe (Easy Version)
Bonus!! Not too short, not too long (2900)
- 1562F - Tubular Bells
- 997D - Cycles in product
- 725F - Family Photos
- 717A - Festival Organization
- 848D - Shake It!
- 2046E1 - Cheops and a Contest (Easy Version)
- 1847E - Triangle Platinum?
- 917C - Pollywog
- 1601E - Phys Ed Online
- 1979F - Kostyanych's Theorem
- 1987G1 - Spinning Round (Easy Version)
- 1725D - Deducing Sortability
- 1264D2 - Beautiful Bracket Sequence (hard version)
- 2023D - Many Games
- 1575F - Finding Expected Value
- 1056G - Take Metro
- 1901F - Landscaping
- 1361D - Johnny and James
- 722E - Research Rover
- 2059E2 - Stop Gaming (Hard Version)
- 1392G - Omkar and Pies
- 819C - Mister B and Beacons on Field
- 819D - Mister B and Astronomers
- 1943E1 - MEX Game 2 (Easy Version)
- 1765J - Hero to Zero
- 2066D2 - Club of Young Aircraft Builders (hard version)
- 1172D - Nauuo and Portals
- 1835D - Doctor's Brown Hypothesis
- 763E - Timofey and our friends animals
- 1928F - Digital Patterns
- 1916F - Group Division
3000
- 889E - Mod Mod Mod
- 1418F - Equal Product
- 914F - Substrings in a String
- 1175G - Yet Another Partiton Problem
- 1824D - LuoTianyi and the Function
- 1616H - Keep XOR Low
- 1572E - Polygon
- 1909G - Pumping Lemma
- 1603D - Artistic Partition
- 1854E - Game Bundles
- 2043G - Problem with Queries
- 1442E - Black, White and Grey Tree
- 771E - Bear and Rectangle Strips
- 1667E - Centroid Probabilities
- 627E - Orchestra
- 618F - Double Knapsack
- 1983G - Your Loss
- 891E - Lust
- 1844G - Tree Weights
- 1476F - Lanterns
- 1988F - Heartbeat
- 1763F - Edge Queries
- 1842H - Tenzing and Random Real Numbers
- 2068K - Amusement Park Rides
- 1748F - Circular Xor Reversal
- 1178G - The Awesomest Vertex
- 1342F - Make It Ascending
- 1672I - PermutationForces
- 859G - Circle of Numbers
- 2086F - Online Palindrome
- 2125F - Timofey and Docker
- 1787G - Colorful Tree Again
- 2075F - Beautiful Sequence Returns
- 1797F - Li Hua and Path
- 1526F - Median Queries
- 1007C - Guess two numbers
- 1889D - Game of Stacks
- 698F - Coprime Permutation
- 1969F - Card Pairing
- 2133F - Flint and Steel
- 1097G - Vladislav and a Great Legend
- 1637G - Birthday
- 1743G - Antifibonacci Cut
- 1446D2 - Frequency Problem (Hard Version)
- 1535F - String Distance
- 997E - Good Subsegments
- 798E - Mike and code of a permutation
- 1975G - Zimpha Fan Club
- 1575C - Cyclic Sum
- 1934E - Weird LCM Operations
- 1438F - Olha and Igor
- 1428G2 - Lucky Numbers (Hard Version)
- 1252D - Find String in a Grid
- 1569F - Palindromic Hamiltonian Path
- 778E - Selling Numbers
- 1552G - A Serious Referee
- 1076G - Array Game
- 2129E - Induced Subgraph Queries
- 2018F2 - Speedbreaker Counting (Medium Version)
- 1152F2 - Neko Rules the Catniverse (Large Version)
- 1615H - Reindeer Games
- 603E - Pastoral Oddities
- 2062E2 - The Game (Hard Version)
- 1854D - Michael and Hotel
- 1299D - Around the World
- 1267G - Game Relics
- 2056F2 - Xor of Median (Hard Version)
- 1218G - Alpha planetary system
- 1019C - Sergey's problem
- 1508D - Swap Pass
- 641F - Little Artem and 2-SAT
- 1545D - AquaMoon and Wrong Coordinate
- 1981F - Turtle and Paths on a Tree
- 1610F - Mashtali: a Space Oddysey
- 1659F - Tree and Permutation Game
- 1147E - Rainbow Coins
- 1392H - ZS Shuffles Cards
- 739E - Gosha is hunting
- 2070F - Friends and Pizza
- 1609G - A Stroll Around the Matrix
- 2045L - Buggy DFS
- 1989F - Simultaneous Coloring
- 1651F - Tower Defense
- 1779G - The Game of the Century
- 1361E - James and the Chase
- 1474F - 1 2 3 4 ...
- 1776M - Parmigiana With Seafood
- 1764G2 - Doremy's Perfect DS Class (Medium Version)
- 2057G - Secret Message
- 1758F - Decent Division
- 852H - Bob and stages
- 1707D - Partial Virtual Trees
- 2029G - Balanced Problem
- 1423I - Lookup Tables
- 1956F - Nene and the Passing Game
- 1411F - The Thorny Path
- 1250D - Conference Problem
- 1874E - Jellyfish and Hack
- 2038H - Galactic Council
- 1838F - Stuck Conveyor
Bonus!! Not too short, not too long (3000)
- 1028G - Guess the number
- 1063E - Lasers and Mirrors
- 1381D - The Majestic Brown Tree Snake
- 1868D - Flower-like Pseudotree
- 2045F - Grid Game 3-angle
- 788D - Finding lines
- 2025G - Variable Damage
- 696E - ...Wait for it...
- 1218B - Guarding warehouses
- 1149D - Abandoning Roads
- 793F - Julia the snail
- 2120G - Eulerian Line Graph
- 666D - Chain Reaction
- 843E - Maximum Flow
- 2109F - Penguin Steps
- 856F - To Play or not to Play
- 1163F - Indecisive Taxi Fee
- 1181E2 - A Story of One Country (Hard)
- 1320E - Treeland and Viruses
- 773E - Blog Post Rating







