2121E
Sponsor of Your Problems
dpgreedyimplementationstrings
Rating 1500
原题Codeforces 训练
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题池总量
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2108C
Neo's Escape
binary searchbrute forcedata structuresdpdsugraphsgreedyimplementation
Rating 1500
原题1926E
Vlad and an Odd Ordering
binary searchbitmasksdata structuresdpimplementationmathnumber theory
Rating 1500
原题1466D
13th Labour of Heracles
data structuresgreedysortingstrees
Rating 1500
原题1203E
Boxers
greedysortings
Rating 1500
原题1760F
Quests
binary searchgreedysortings
Rating 1500
原题1301B
Motarack's Birthday
binary searchgreedyternary search
Rating 1500
原题2069C
Beautiful Sequence
combinatoricsdpgreedytwo pointers
Rating 1500
原题1296D
Fight with Monsters
greedysortings
Rating 1500
原题1553D
Backspace
dpgreedystringstwo pointers
Rating 1500
原题1462E1
Close Tuples (easy version)
binary searchcombinatoricsmathsortingstwo pointers
Rating 1500
原题1809C
Sum on Subarrays
constructive algorithmsgreedymath
Rating 1500
原题1253C
Sweets Eating
dpgreedymathsortings
Rating 1500
原题1800E2
Unforgivable Curse (hard version)
brute forceconstructive algorithmsdfs and similardsugraphsgreedystrings
Rating 1500
原题1487C
Minimum Ties
brute forceconstructive algorithmsdfs and similargraphsgreedyimplementationmath
Rating 1500
原题1397B
Power Sequence
brute forcemathnumber theorysortings
Rating 1500
原题2115A
Gellyfish and Flaming Peony
constructive algorithmsdpmathnumber theory
Rating 1500
原题1659C
Line Empire
binary searchbrute forcedpgreedyimplementationmath
Rating 1500
原题1850G
The Morning Star
combinatoricsdata structuresgeometryimplementationmathsortings
Rating 1500
原题1791F
Range Update Point Query
binary searchbrute forcedata structures
Rating 1500
原题1296C
Yet Another Walking Robot
data structuresimplementation
Rating 1500
原题576A
Vasya and Petya's Game
mathnumber theory
Rating 1500
原题1391C
Cyclic Permutations
combinatoricsdpgraphsmath
Rating 1500
原题1997D
Maximize the Root
binary searchdfs and similardpgreedytrees
Rating 1500
原题2007C
Dora and C++
mathnumber theory
Rating 1500
原题1630A
And Matching
bitmasksconstructive algorithms
Rating 1500
原题1536C
Diluc and Kaeya
data structuresdphashingnumber theory
Rating 1500
原题1419C
Killjoy
greedyimplementationmath
Rating 1500
原题1263D
Secret Passwords
dfs and similardsugraphs
Rating 1500
原题982C
Cut 'em all!
dfs and similardpgraphsgreedytrees
Rating 1500
原题510B
Fox And Two Dots
dfs and similar
Rating 1500
原题1547E
Air Conditioners
data structuresdpimplementationshortest pathssortingstwo pointers
Rating 1500
原题1842C
Tenzing and Balls
dp
Rating 1500
原题687A
NP-Hard Problem
dfs and similargraphs
Rating 1500
原题1924A
Did We Get Everything Covered?
constructive algorithmsdpgreedyshortest pathsstrings
Rating 1500
原题1133D
Zero Quantity Maximization
hashingmathnumber theory
Rating 1500
原题1792C
Min Max Sort
binary searchbrute forcegreedymathtwo pointers
Rating 1500
原题1552B
Running for Gold
combinatoricsgraphsgreedysortings
Rating 1500
原题356A
Knight Tournament
data structuresdsu
Rating 1500
原题1690E
Price Maximization
binary searchgreedymathtwo pointers
Rating 1500
原题1139C
Edgy Trees
dfs and similardsugraphsmathtrees
Rating 1500
原题1873G
ABBC or BACB
constructive algorithmsgreedy
Rating 1500
原题1416A
k-Amazing Numbers
binary searchdata structuresimplementationtwo pointers
Rating 1500
原题1419D2
Sage's Birthday (hard version)
binary searchbrute forceconstructive algorithmsgreedysortingstwo pointers
Rating 1500
原题1492C
Maximum width
binary searchdata structuresdpgreedytwo pointers
Rating 1500
原题1950E
Nearly Shortest Repeating Substring
brute forceimplementationnumber theorystrings
Rating 1500
原题1325C
Ehab and Path-etic MEXs
constructive algorithmsdfs and similargreedytrees
Rating 1500
原题1426D
Non-zero Segments
constructive algorithmsdata structuresgreedysortings
Rating 1500
原题1304C
Air Conditioner
dpgreedyimplementationsortingstwo pointers
Rating 1500
原题771A
Bear and Friendship Condition
dfs and similardsugraphs
Rating 1500
原题