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Pinely Round 4 (Div. 1 + Div. 2)
06:04:55
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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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Custom test
Problems
#
Name
1312D
Count the Arrays
combinatorics
,
math
1700
x9292
1312C
Adding Powers
bitmasks
,
greedy
,
implementation
,
math
,
number theory
,
ternary search
1400
x16263
1311F
Moving Points
data structures
,
divide and conquer
,
implementation
,
sortings
1900
x4180
1311C
Perform the Combo
brute force
1300
x15917
1310A
Recommendations
data structures
,
greedy
,
sortings
1700
x5150
1307D
Cow and Fields
binary search
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
shortest paths
,
sortings
1900
x6249
1307C
Cow and Message
brute force
,
dp
,
math
,
strings
1500
x11754
1307B
Cow and Friend
geometry
,
greedy
,
math
1300
x13185
1305D
Kuroni and the Celebration
constructive algorithms
,
dfs and similar
,
interactive
,
trees
1900
x4933
1305C
Kuroni and Impossible Calculation
brute force
,
combinatorics
,
math
,
number theory
1600
x14224
1304D
Shortest and Longest LIS
constructive algorithms
,
graphs
,
greedy
,
two pointers
1800
x6282
1304C
Air Conditioner
dp
,
greedy
,
implementation
,
sortings
,
two pointers
1500
x16199
1303D
Fill The Bag
bitmasks
,
greedy
1900
x7027
1303C
Perfect Keyboard
dfs and similar
,
greedy
,
implementation
1600
x12084
1303B
National Project
math
1400
x15633
1301C
Ayoub's function
binary search
,
combinatorics
,
greedy
,
math
,
strings
1700
x9270
1301B
Motarack's Birthday
binary search
,
greedy
,
ternary search
1500
x14105
1299B
Aerodynamic
geometry
1800
x5219
1299A
Anu Has a Function
brute force
,
greedy
,
math
1500
x11958
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7385
1296D
Fight with Monsters
greedy
,
sortings
1500
x14158
1296C
Yet Another Walking Robot
data structures
,
implementation
1500
x14711
1295D
Same GCDs
math
,
number theory
1800
x8728
1295C
Obtain The String
dp
,
greedy
,
strings
1600
x12807
1295B
Infinite Prefixes
math
,
strings
1700
x9265
1294E
Obtain a Permutation
greedy
,
implementation
,
math
1900
x4871
1294D
MEX maximizing
data structures
,
greedy
,
implementation
,
math
1600
x11640
1294C
Product of Three Numbers
greedy
,
math
,
number theory
1300
x33768
1292B
Aroma's Search
brute force
,
constructive algorithms
,
geometry
,
greedy
,
implementation
1700
x6286
1292A
NEKO's Maze Game
data structures
,
dsu
,
implementation
1400
x13152
1291B
Array Sharpening
greedy
,
implementation
1300
x14086
1290B
Irreducible Anagrams
binary search
,
constructive algorithms
,
data structures
,
strings
,
two pointers
1800
x5260
1290A
Mind Control
brute force
,
data structures
,
implementation
1600
x8532
1288C
Two Arrays
combinatorics
,
dp
1600
x12647
1287B
Hyperset
brute force
,
data structures
,
implementation
1500
x9396
1286B
Numbers on Tree
constructive algorithms
,
data structures
,
dfs and similar
,
graphs
,
greedy
,
trees
1800
x4644
1286A
Garland
dp
,
greedy
,
sortings
1800
x8694
1285D
Dr. Evil Underscores
bitmasks
,
brute force
,
dfs and similar
,
divide and conquer
,
dp
,
greedy
,
strings
,
trees
1900
x7607
1285C
Fadi and LCM
brute force
,
math
,
number theory
1400
x22890
1285B
Just Eat It!
dp
,
greedy
,
implementation
1300
x22000
1284C
New Year and Permutation
combinatorics
,
math
1600
x7959
1284B
New Year and Ascent Sequence
binary search
,
combinatorics
,
data structures
,
dp
,
implementation
,
sortings
1400
x10789
1283E
New Year Parties
dp
,
greedy
1800
x6495
1283D
Christmas Trees
graphs
,
greedy
,
shortest paths
1800
x7699
1283C
Friends and Gifts
constructive algorithms
,
data structures
,
math
1500
x13056
1282C
Petya and Exam
greedy
,
sortings
,
two pointers
1800
x4272
1282B2
K for the Price of One (Hard Version)
dp
,
greedy
,
sortings
1600
x10096
1282B1
K for the Price of One (Easy Version)
dp
,
greedy
,
sortings
1400
x11410
1281B
Azamon Web Services
greedy
1600
x8244
1280B
Beingawesomeism
implementation
,
math
1800
x3914
1280A
Cut and Paste
implementation
,
math
1700
x5352
1279D
Santa's Bot
combinatorics
,
math
,
probabilities
1700
x6172
1279C
Stack of Presents
data structures
,
implementation
1400
x11622
1279B
Verse For Santa
binary search
,
brute force
,
implementation
1300
x13553
1278C
Berry Jam
data structures
,
dp
,
greedy
,
implementation
1700
x7919
1278B
A and B
greedy
,
math
1500
x13159
1277D
Let's Play the Words?
data structures
,
hashing
,
implementation
,
math
1900
x3102
1276B
Two Fairs
combinatorics
,
dfs and similar
,
dsu
,
graphs
1900
x4888
1276A
As Simple as One and Two
dp
,
greedy
1400
x12248
1272E
Nearest Opposite Parity
dfs and similar
,
graphs
,
shortest paths
1900
x6168
1272D
Remove One Element
brute force
,
dp
1500
x16317
1271C
Shawarma Tent
brute force
,
geometry
,
greedy
,
implementation
1300
x10452
1271B
Blocks
greedy
,
math
1300
x11290
1270D
Strange Device
constructive algorithms
,
interactive
,
math
,
sortings
1900
x4653
1270C
Make Good
bitmasks
,
constructive algorithms
,
math
1400
x13943
1269B
Modulo Equality
brute force
,
sortings
1500
x9092
1268A
Long Beautiful Integer
constructive algorithms
,
greedy
,
implementation
,
strings
1700
x8507
1267L
Lexicography
constructive algorithms
,
strings
1800
x3009
1267J
Just Arrange the Icons
greedy
,
implementation
,
math
1800
x2786
1267E
Elections
greedy
1700
x3155
1266C
Diverse Matrix
constructive algorithms
,
greedy
,
math
,
number theory
1400
x9592
1265B
Beautiful Numbers
data structures
,
implementation
,
math
,
two pointers
1300
x12526
1264B
Beautiful Sequence
brute force
,
constructive algorithms
,
greedy
1900
x5768
1264A
Beautiful Regional Contest
greedy
,
implementation
1500
x10023
1263D
Secret Passwords
dfs and similar
,
dsu
,
graphs
1500
x13741
1263C
Everyone is a Winner!
binary search
,
math
,
meet-in-the-middle
,
number theory
1400
x13586
1263B
PIN Codes
greedy
,
implementation
1400
x11303
1260D
A Game with Traps
binary search
,
dp
,
greedy
,
sortings
1900
x3808
1260C
Infinite Fence
greedy
,
math
,
number theory
1700
x8184
1260B
Obtain Two Zeroes
binary search
,
math
1300
x15604
1257D
Yet Another Monster Killing Problem
binary search
,
data structures
,
dp
,
greedy
,
sortings
,
two pointers
1700
x7487
1256D
Binary String Minimizing
greedy
1500
x11948
1256C
Platforms Jumping
greedy
1700
x6836
1256B
Minimize the Permutation
greedy
1400
x13012
1255C
League of Leesins
constructive algorithms
,
implementation
1600
x6672
1254B1
Send Boxes to Alice (Easy Version)
constructive algorithms
,
greedy
,
math
,
number theory
,
ternary search
,
two pointers
1800
x4593
1254A
Feeding Chicken
constructive algorithms
,
greedy
,
implementation
1700
x5145
1253D
Harmonious Graph
constructive algorithms
,
dfs and similar
,
dsu
,
graphs
,
greedy
,
sortings
1700
x9079
1253C
Sweets Eating
dp
,
greedy
,
math
,
sortings
1500
x14118
1253B
Silly Mistake
greedy
,
implementation
1400
x11121
1252H
Twin Buildings
greedy
,
implementation
1800
x2610
1252C
Even Path
data structures
,
implementation
1600
x3650
1251D
Salary Changing
binary search
,
greedy
,
sortings
1900
x5862
1251C
Minimize The Integer
greedy
,
two pointers
1600
x12144
1251B
Binary Palindromes
greedy
,
strings
1400
x10933
1250L
Divide The Students
binary search
,
greedy
,
math
1500
x4059
1250J
The Parade
binary search
,
greedy
1800
x2898
1250H
Happy Birthday
math
1500
x4016
1250B
The Feast and the Bus
brute force
,
constructive algorithms
,
greedy
,
math
1800
x2589
1250A
Berstagram
implementation
1400
x4051
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