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Pinely Round 4 (Div. 1 + Div. 2)
18:02:29
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Difficulty:
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
#
Name
1903D1
Maximum And Queries (easy version)
binary search
,
bitmasks
,
brute force
,
greedy
1700
x5397
1903C
Theofanis' Nightmare
constructive algorithms
,
greedy
1400
x11253
1901D
Yet Another Monster Fight
binary search
,
dp
,
greedy
,
implementation
,
math
1700
x6557
1901C
Add, Divide and Floor
constructive algorithms
,
greedy
,
math
1400
x11405
1899F
Alex's whims
constructive algorithms
,
graphs
,
greedy
,
shortest paths
,
trees
1600
x7169
1898C
Colorful Grid
constructive algorithms
1700
x5218
1898B
Milena and Admirer
greedy
,
math
1500
x11237
1896D
Ones and Twos
binary search
,
data structures
,
divide and conquer
,
math
,
two pointers
1700
x5480
1896C
Matching Arrays
binary search
,
constructive algorithms
,
greedy
,
sortings
1400
x9191
1895C
Torn Lucky Ticket
brute force
,
dp
,
hashing
,
implementation
,
math
1400
x10606
1893B
Neutral Tonality
constructive algorithms
,
greedy
,
sortings
,
two pointers
1700
x8526
1893A
Anonymous Informant
brute force
,
dfs and similar
,
graphs
,
implementation
1400
x11853
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x12379
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x7081
1886C
Decreasing String
implementation
,
strings
1600
x10949
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x5836
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x10139
1883F
You Are So Beautiful
data structures
1400
x8987
1883E
Look Back
bitmasks
,
greedy
1700
x7680
1883D
In Love
data structures
,
greedy
1500
x10889
1882C
Card Game
brute force
,
greedy
1500
x11886
1881F
Minimum Maximum Distance
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
1700
x6484
1881E
Block Sequence
dp
1500
x12960
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x7050
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x12008
1878D
Reverse Madness
data structures
,
greedy
1600
x8000
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x7959
1875D
Jellyfish and Mex
dp
1600
x8199
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x11301
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x7008
1873G
ABBC or BACB
constructive algorithms
,
greedy
1500
x12605
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x6080
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x12871
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x6667
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x6765
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5594
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7519
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6555
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x9264
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x6013
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x10301
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6532
1861C
Queries for the Array
data structures
,
dfs and similar
,
implementation
,
strings
,
trees
1600
x9822
1860C
Game on Permutation
data structures
,
dp
,
games
,
greedy
1400
x12965
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6802
1858B
The Walkway
brute force
,
dp
,
greedy
,
math
,
number theory
1500
x11052
1857F
Sum and Product
binary search
,
data structures
,
math
1600
x11008
1857E
Power of Points
math
,
sortings
1500
x12022
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x5132
1856C
To Become Max
binary search
,
brute force
,
data structures
,
dp
1600
x11782
1854A1
Dual (Easy Version)
constructive algorithms
,
math
1400
x13765
1852B
Imbalanced Arrays
constructive algorithms
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
1800
x4313
1852A
Ntarsis' Set
binary search
,
math
,
number theory
1800
x7824
1851F
Lisa and the Martians
bitmasks
,
greedy
,
math
,
strings
,
trees
1800
x5604
1851E
Nastya and Potions
dfs and similar
,
dp
,
graphs
,
sortings
1500
x9920
1850H
The Third Letter
dfs and similar
,
dsu
,
graphs
,
greedy
,
implementation
1700
x7899
1850G
The Morning Star
combinatorics
,
data structures
,
geometry
,
implementation
,
math
,
sortings
1500
x11863
1849D
Array Painting
constructive algorithms
,
greedy
,
two pointers
1700
x8200
1849C
Binary String Copying
binary search
,
brute force
,
data structures
,
hashing
,
strings
1600
x10221
1848C
Vika and Price Tags
math
,
number theory
1800
x6158
1847C
Vampiric Powers, anyone?
bitmasks
,
brute force
,
dp
,
greedy
1400
x12583
1846F
Rudolph and Mimic
constructive algorithms
,
implementation
,
interactive
1800
x3005
1846E2
Rudolf and Snowflakes (hard version)
binary search
,
brute force
,
implementation
,
math
1800
x6831
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7597
1845C
Strong Password
binary search
,
dp
,
greedy
,
strings
1400
x13854
1844D
Row Major
constructive algorithms
,
greedy
,
math
,
number theory
,
strings
1400
x12051
1843F1
Omsk Metro (simple version)
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
1800
x5169
1843E
Tracking Segments
binary search
,
brute force
,
data structures
,
two pointers
1600
x11696
1842C
Tenzing and Balls
dp
1500
x12278
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7633
1840E
Character Blocking
data structures
,
hashing
,
implementation
1600
x7830
1840D
Wooden Toy Festival
binary search
,
greedy
,
sortings
1400
x13404
1838C
No Prime Differences
constructive algorithms
,
math
,
number theory
1400
x14028
1837D
Bracket Coloring
constructive algorithms
,
greedy
1400
x14151
1835A
k-th equality
brute force
,
implementation
,
math
1700
x7652
1833G
Ksyusha and Chinchilla
constructive algorithms
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
1800
x5196
1833F
Ira and Flamenco
combinatorics
,
constructive algorithms
,
data structures
,
implementation
,
math
,
sortings
,
two pointers
1700
x7083
1833E
Round Dance
dfs and similar
,
dsu
,
graphs
,
shortest paths
1600
x11219
1833D
Flipper
brute force
,
constructive algorithms
,
greedy
1400
x13081
1830A
Copil Copac Draws Trees
dfs and similar
,
dp
,
graphs
,
trees
1400
x13063
1829H
Don't Blame Me
bitmasks
,
combinatorics
,
dp
,
math
1700
x7464
1829G
Hits Different
data structures
,
dp
,
implementation
,
math
1600
x9969
1826D
Running Miles
brute force
,
dp
,
greedy
1700
x9210
1824B1
LuoTianyi and the Floating Islands (Easy Version)
combinatorics
,
math
,
probabilities
,
trees
1800
x4457
1824A
LuoTianyi and the Show
greedy
,
implementation
1400
x11074
1822G1
Magic Triples (Easy Version)
brute force
,
data structures
,
math
,
number theory
1700
x6848
1822F
Gardening Friends
brute force
,
dfs and similar
,
dp
,
graphs
,
trees
1700
x5870
1822E
Making Anti-Palindromes
greedy
,
math
,
strings
1600
x10170
1817A
Almost Increasing Subsequence
binary search
,
data structures
,
greedy
1500
x10749
1814C
Search in Parallel
constructive algorithms
,
greedy
,
sortings
1500
x10554
1814B
Long Legs
brute force
,
math
1700
x9807
1811E
Living Sequence
binary search
,
dp
,
math
,
number theory
1500
x11988
1811D
Umka and a Long Flight
constructive algorithms
,
implementation
,
math
1600
x7291
1810D
Climbing the Tree
binary search
,
math
1700
x7306
1809D
Binary String Sorting
constructive algorithms
,
greedy
1800
x6137
1809C
Sum on Subarrays
constructive algorithms
,
greedy
,
math
1500
x12418
1807F
Bouncy Ball
brute force
,
dfs and similar
,
implementation
1700
x6086
1806C
Sequence Master
brute force
,
constructive algorithms
,
math
1600
x7442
1805D
A Wide, Wide Graph
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1800
x6335
1805C
Place for a Selfie
binary search
,
data structures
,
geometry
,
math
1400
x12301
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