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Problems
#
Name
161D
Distance in Tree
dfs and similar
,
dp
,
trees
1800
x13656
1328D
Carousel
constructive algorithms
,
dp
,
graphs
,
greedy
,
math
1800
x12594
1509C
The Sports Festival
dp
,
greedy
1800
x11851
1398D
Colored Rectangles
dp
,
greedy
,
sortings
1800
x11023
1437C
Chef Monocarp
dp
,
flows
,
graph matchings
,
greedy
,
math
,
sortings
1800
x10135
1475D
Cleaning the Phone
binary search
,
dp
,
sortings
,
two pointers
1800
x9759
1525D
Armchairs
dp
,
flows
,
graph matchings
,
greedy
1800
x9402
580D
Kefa and Dishes
bitmasks
,
dp
1800
x9211
1324F
Maximum White Subtree
dfs and similar
,
dp
,
graphs
,
trees
1800
x9142
1401D
Maximum Distributed Tree
dfs and similar
,
dp
,
greedy
,
implementation
,
math
,
number theory
,
sortings
,
trees
1800
x8870
1221D
Make The Fence Great Again
dp
1800
x8658
1327E
Count The Blocks
combinatorics
,
dp
,
math
1800
x8583
1442A
Extreme Subtraction
constructive algorithms
,
dp
,
greedy
1800
x8579
1572A
Book
binary search
,
brute force
,
data structures
,
dp
,
graphs
,
implementation
,
sortings
1800
x8560
1381B
Unmerge
dp
1800
x8502
1286A
Garland
dp
,
greedy
,
sortings
1800
x8412
1038D
Slime
dp
,
greedy
,
implementation
1800
x8129
1335E2
Three Blocks Palindrome (hard version)
brute force
,
data structures
,
dp
,
two pointers
1800
x7989
1096D
Easy Problem
dp
1800
x7718
543A
Writing Code
dp
1800
x7696
1409E
Two Platforms
binary search
,
dp
,
sortings
,
two pointers
1800
x7580
1446B
Catching Cheaters
dp
,
strings
1800
x7563
1535D
Playoff Tournament
data structures
,
dfs and similar
,
dp
,
implementation
,
trees
1800
x7499
1637D
Yet Another Minimization Problem
dp
,
greedy
,
math
1800
x7382
1517D
Explorer Space
dp
,
graphs
,
shortest paths
1800
x7350
1845D
Rating System
binary search
,
brute force
,
data structures
,
dp
,
dsu
,
greedy
,
math
,
two pointers
1800
x7344
1841C
Ranom Numbers
brute force
,
dp
,
greedy
,
math
,
strings
1800
x7334
1244D
Paint the Tree
brute force
,
constructive algorithms
,
dp
,
graphs
,
implementation
,
trees
1800
x7233
1935C
Messenger in MAC
binary search
,
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
sortings
1800
x7201
1296E1
String Coloring (easy version)
constructive algorithms
,
dp
,
graphs
,
greedy
,
sortings
1800
x7125
1491D
Zookeeper and The Infinite Zoo
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
1800
x6908
1728D
Letter Picking
constructive algorithms
,
dp
,
games
,
two pointers
1800
x6897
148D
Bag of mice
dp
,
games
,
math
,
probabilities
1800
x6807
1552D
Array Differentiation
bitmasks
,
brute force
,
constructive algorithms
,
dfs and similar
,
dp
,
graphs
,
math
1800
x6710
830A
Office Keys
binary search
,
brute force
,
dp
,
greedy
,
sortings
1800
x6602
1859D
Andrey and Escape from Capygrad
binary search
,
data structures
,
dp
,
dsu
,
greedy
,
sortings
1800
x6572
1394A
Boboniu Chats with Du
dp
,
greedy
,
sortings
,
two pointers
1800
x6465
1678B2
Tokitsukaze and Good 01-String (hard version)
dp
,
greedy
,
implementation
1800
x6403
1620C
BA-String
brute force
,
dp
,
greedy
,
implementation
,
math
1800
x6371
1861D
Sorting By Multiplication
dp
,
greedy
1800
x6295
1283E
New Year Parties
dp
,
greedy
1800
x6291
519D
A and B and Interesting Substrings
data structures
,
dp
,
two pointers
1800
x6276
1805D
A Wide, Wide Graph
dfs and similar
,
dp
,
graphs
,
greedy
,
trees
1800
x6071
1734D
Slime Escape
data structures
,
dp
,
greedy
,
two pointers
1800
x6047
1635D
Infinite Set
bitmasks
,
dp
,
math
,
matrices
,
number theory
,
strings
1800
x6021
245H
Queries for Number of Palindromes
dp
,
hashing
,
strings
1800
x6002
1955F
Unfair Game
dp
,
games
,
greedy
,
math
,
schedules
1800
x5983
1793D
Moscow Gorillas
binary search
,
dp
,
greedy
,
implementation
,
math
,
two pointers
1800
x5789
1720D1
Xor-Subsequence (easy version)
bitmasks
,
brute force
,
dp
,
strings
,
trees
,
two pointers
1800
x5739
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x5720
721C
Journey
dp
,
graphs
1800
x5683
1718A1
Burenka and Traditions (easy version)
dp
,
greedy
1800
x5513
1582F1
Korney Korneevich and XOR (easy version)
bitmasks
,
dp
,
greedy
1800
x5273
983B
XOR-pyramid
dp
1800
x5265
1133E
K Balanced Teams
dp
,
sortings
,
two pointers
1800
x5226
1083A
The Fair Nut and the Best Path
data structures
,
dp
,
trees
1800
x5209
1675F
Vlad and Unfinished Business
dfs and similar
,
dp
,
greedy
,
trees
1800
x5038
1843F1
Omsk Metro (simple version)
data structures
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
trees
1800
x4999
1954D
Colored Balls
combinatorics
,
dp
,
math
,
sortings
1800
x4970
1833G
Ksyusha and Chinchilla
constructive algorithms
,
dfs and similar
,
dp
,
dsu
,
greedy
,
implementation
,
trees
1800
x4963
1856E1
PermuTree (easy version)
dfs and similar
,
dp
,
trees
1800
x4926
274B
Zero Tree
dfs and similar
,
dp
,
greedy
,
trees
1800
x4900
933A
A Twisty Movement
dp
1800
x4837
909C
Python Indentation
dp
1800
x4759
527D
Clique Problem
data structures
,
dp
,
greedy
,
implementation
,
sortings
1800
x4654
869C
The Intriguing Obsession
combinatorics
,
dp
,
math
1800
x4364
946D
Timetable
dp
1800
x4276
743D
Chloe and pleasant prizes
dfs and similar
,
dp
,
graphs
,
trees
1800
x4253
1740E
Hanging Hearts
constructive algorithms
,
data structures
,
dfs and similar
,
dp
,
greedy
,
trees
1800
x4119
671A
Recycling Bottles
dp
,
geometry
,
greedy
,
implementation
1800
x4108
358D
Dima and Hares
dp
,
greedy
1800
x3894
700B
Connecting Universities
dfs and similar
,
dp
,
graphs
,
trees
1800
x3787
768C
Jon Snow and his Favourite Number
brute force
,
dp
,
implementation
,
sortings
1800
x3771
1930D1
Sum over all Substrings (Easy Version)
brute force
,
dp
,
greedy
,
strings
1800
x3711
1107D
Compression
dp
,
implementation
,
math
,
number theory
1800
x3683
914C
Travelling Salesman and Special Numbers
brute force
,
combinatorics
,
dp
1800
x3651
1016C
Vasya And The Mushrooms
dp
,
implementation
1800
x3639
917A
The Monster
dp
,
greedy
,
implementation
,
math
1800
x3469
666A
Reberland Linguistics
dp
,
implementation
,
strings
1800
x3418
733C
Epidemic in Monstropolis
constructive algorithms
,
dp
,
greedy
,
two pointers
1800
x3298
747D
Winter Is Coming
dp
,
greedy
,
sortings
1800
x3009
822D
My pretty girl Noora
brute force
,
dp
,
greedy
,
math
,
number theory
1800
x2966
1725M
Moving Both Hands
dp
,
graphs
,
shortest paths
1800
x2863
645D
Robot Rapping Results Report
binary search
,
dp
,
graphs
1800
x2767
847E
Packmen
binary search
,
dp
1800
x2746
351A
Jeff and Rounding
dp
,
greedy
,
implementation
,
math
1800
x2683
626D
Jerry's Protest
brute force
,
combinatorics
,
dp
,
probabilities
1800
x2652
846C
Four Segments
brute force
,
data structures
,
dp
1800
x2614
402D
Upgrading Array
dp
,
greedy
,
math
,
number theory
1800
x2520
38E
Let's Go Rolling!
dp
,
sortings
1800
x2495
1575D
Divisible by Twenty-Five
brute force
,
dfs and similar
,
dp
1800
x2419
845D
Driving Test
data structures
,
dp
,
greedy
1800
x2333
132C
Logo Turtle
dp
1800
x2275
533E
Correcting Mistakes
constructive algorithms
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x2176
167B
Wizards and Huge Prize
dp
,
math
,
probabilities
1800
x2093
1912K
Kim's Quest
bitmasks
,
combinatorics
,
dp
1800
x2066
73C
LionAge II
dp
1800
x2056
67A
Partial Teacher
dp
,
graphs
,
greedy
,
implementation
1800
x2056
187B
AlgoRace
dp
,
shortest paths
1800
x1936
30C
Shooting Gallery
dp
,
probabilities
1800
x1853
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
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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
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strings
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