1732C1
Sheikh (Easy version)
binary searchbitmasksgreedytwo pointers
Rating 1800
原题Codeforces 训练
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题池总量
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1990D
Grid Puzzle
bitmasksbrute forcedpgreedyimplementation
Rating 1800
原题1979D
Fixing a Binary String
bitmasksbrute forceconstructive algorithmsdpgreedyhashingstrings
Rating 1800
原题1552D
Array Differentiation
bitmasksbrute forceconstructive algorithmsdfs and similardpgraphsmath
Rating 1800
原题2025D
Attribute Checks
brute forcedata structuresdpimplementationmathtwo pointers
Rating 1800
原题1859D
Andrey and Escape from Capygrad
binary searchdata structuresdpdsugreedysortings
Rating 1800
原题1861D
Sorting By Multiplication
dpgreedy
Rating 1800
原题988D
Points and Powers of Two
brute forcemath
Rating 1800
原题1870D
Prefix Purchase
greedyimplementationsortings
Rating 1800
原题1426E
Rock, Paper, Scissors
brute forceconstructive algorithmsflowsgreedymath
Rating 1800
原题1965B
Missing Subsequence Sum
bitmasksconstructive algorithmsgreedynumber theory
Rating 1800
原题1954D
Colored Balls
combinatoricsdpmathsortings
Rating 1800
原题1296E1
String Coloring (easy version)
constructive algorithmsdpgraphsgreedysortings
Rating 1800
原题2121F
Yamakasi
binary searchbrute forcedata structuresgreedytwo pointers
Rating 1800
原题1728D
Letter Picking
constructive algorithmsdpgamestwo pointers
Rating 1800
原题830A
Office Keys
binary searchbrute forcedpgreedysortings
Rating 1800
原题1244D
Paint the Tree
brute forceconstructive algorithmsdpgraphsimplementationtrees
Rating 1800
原题3C
Tic-tac-toe
brute forcegamesimplementation
Rating 1800
原题1420D
Rescue Nibel!
combinatoricsdata structuressortings
Rating 1800
原题1491D
Zookeeper and The Infinite Zoo
bitmasksconstructive algorithmsdpgreedymath
Rating 1800
原题1923D
Slimes
binary searchconstructive algorithmsdata structuresgreedytwo pointers
Rating 1800
原题1466E
Apollo versus Pan
bitmasksbrute forcemath
Rating 1800
原题1409E
Two Platforms
binary searchdpsortingstwo pointers
Rating 1800
原题1619D
New Year's Problem
binary searchgreedysortings
Rating 1800
原题1535D
Playoff Tournament
data structuresdfs and similardpimplementationtrees
Rating 1800
原题1758D
Range = √Sum
binary searchbrute forceconstructive algorithmsmathtwo pointers
Rating 1800
原题1846E2
Rudolf and Snowflakes (hard version)
binary searchbrute forceimplementationmath
Rating 1800
原题1462F
The Treasure of The Segments
binary searchdata structuresgreedy
Rating 1800
原题1775D
Friendly Spiders
dfs and similargraphsmathnumber theoryshortest paths
Rating 1800
原题2005C
Lazy Narek
dpimplementationstrings
Rating 1800
原题2042C
Competitive Fishing
greedy
Rating 1800
原题1987D
World is Mine
dpgames
Rating 1800
原题1955F
Unfair Game
dpgamesgreedymathschedules
Rating 1800
原题1560E
Polycarp and String Transformation
binary searchimplementationsortingsstrings
Rating 1800
原题1367D
Task On The Board
constructive algorithmsgreedyimplementationsortings
Rating 1800
原题1038D
Slime
dpgreedyimplementation
Rating 1800
原题543A
Writing Code
dp
Rating 1800
原题1637D
Yet Another Minimization Problem
dpgreedymath
Rating 1800
原题2014E
Rendez-vous de Marian et Robin
dfs and similargraphsshortest paths
Rating 1800
原题1845D
Rating System
binary searchbrute forcedata structuresdpdsugreedymathtwo pointers
Rating 1800
原题1841C
Ranom Numbers
brute forcedpgreedymathstrings
Rating 1800
原题1768D
Lucky Permutation
constructive algorithmsdfs and similargraphsgreedy
Rating 1800
原题148D
Bag of mice
dpgamesmathprobabilities
Rating 1800
原题1446B
Catching Cheaters
dpstrings
Rating 1800
原题1922E
Increasing Subsequences
bitmasksconstructive algorithmsdivide and conquergreedymath
Rating 1800
原题1852A
Ntarsis' Set
binary searchmathnumber theory
Rating 1800
原题1805D
A Wide, Wide Graph
dfs and similardpgraphsgreedytrees
Rating 1800
原题245H
Queries for Number of Palindromes
dphashingstrings
Rating 1800
原题1517D
Explorer Space
dpgraphsshortest paths
Rating 1800
原题888E
Maximum Subsequence
bitmasksdivide and conquermeet-in-the-middle
Rating 1800
原题