数据边界这里不保存完整题面、样例或题解。点击原题链接后在 Codeforces 页面完成训练。
1539D
PriceFixed
binary searchgreedyimplementationsortingstwo pointers
2128D
Sum of LDS
brute forcecombinatoricsdpgreedymath
1703G
Good Key, Bad Key
bitmasksbrute forcedpgreedymath
1862E
Kolya and Movie Theatre
constructive algorithmsdata structuresgreedy
1303C
Perfect Keyboard
dfs and similargreedyimplementation
1151B
Dima and a Bad XOR
bitmasksbrute forceconstructive algorithmsdp
780B
The Meeting Place Cannot Be Changed
binary search
1980E
Permutation of Rows and Columns
constructive algorithmsdata structuresgreedyhashingimplementationmathmatricessortings
1748C
Zero-Sum Prefixes
brute forcedata structuresdpgreedyimplementation
1567C
Carrying Conundrum
bitmaskscombinatoricsdpmath
1455D
Sequence and Swaps
dpgreedysortings
322B
Ciel and Flowers
combinatoricsmath
2004D
Colored Portals
binary searchbrute forcedata structuresgraphsgreedyimplementationshortest paths
1795D
Triangle Coloring
combinatoricsmath
1722E
Counting Rectangles
brute forcedata structuresdpimplementation
446A
DZY Loves Sequences
dpimplementationtwo pointers
1371D
Grid-00100
constructive algorithmsgreedyimplementation
1689C
Infected Tree
dfs and similardptrees
1978D
Elections
data structuresgreedyimplementationmath
1994C
Hungry Games
binary searchdptwo pointers
2085C
Serval and The Formula
bitmasksconstructive algorithmsdpgreedy
165C
Another Problem on Strings
binary searchbrute forcedpmathstringstwo pointers
1946C
Tree Cutting
binary searchdpgreedyimplementationtrees
1295C
Obtain The String
dpgreedystrings
601A
The Two Routes
graphsshortest paths
2129B
Stay or Mirror
brute forcedata structuresdpgreedysortings
1327C
Game with Chips
constructive algorithmsimplementation
1632C
Strange Test
binary searchbitmasksbrute forcedpmath
1623C
Balanced Stone Heaps
binary searchgreedy
1364C
Ehab and Prefix MEXs
brute forceconstructive algorithmsgreedy
1251C
Minimize The Integer
greedytwo pointers
1437D
Minimal Height Tree
graphsgreedyshortest pathstrees
1857F
Sum and Product
binary searchdata structuresmath
1798D
Shocking Arrangement
constructive algorithmsgreedymath
1779C
Least Prefix Sum
data structuresgreedy
1775C
Interesting Sequence
bitmasksmath
1503A
Balance the Bits
constructive algorithmsgreedy
348A
Mafia
binary searchmathsortings
2063C
Remove Exactly Two
brute forcedata structuresdfs and similardpgraphsgreedysortingstrees
1593E
Gardener and Tree
brute forcedata structuresdfs and similargreedyimplementationtrees
1374E1
Reading Books (easy version)
data structuresgreedysortings
1342C
Yet Another Counting Problem
mathnumber theory
1603B
Moderate Modular Mode
constructive algorithmsmathnumber theory
1527C
Sequence Pair Weight
hashingimplementationmath
1753B
Factorial Divisibility
mathnumber theory
1956C
Nene's Magical Matrix
constructive algorithmsgreedymath
1395C
Boboniu and Bit Operations
bitmasksbrute forcedpgreedy
1348C
Phoenix and Distribution
constructive algorithmsgreedysortingsstrings
1288C
Two Arrays
combinatoricsdp
1707A
Doremy's IQ
binary searchconstructive algorithmsgreedyimplementation