632D
Longest Subsequence
brute forcemathnumber theory
Rating 2100
原题Codeforces 训练
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题池总量
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1366E
Two Arrays
binary searchbrute forcecombinatoricsconstructive algorithmsdptwo pointers
Rating 2100
原题1322B
Present
binary searchbitmasksconstructive algorithmsdata structuresmathsortings
Rating 2100
原题2003D2
Turtle and a MEX Problem (Hard Version)
dfs and similardpgraphsgreedyimplementationmath
Rating 2100
原题1454F
Array Partition
binary searchdata structuresgreedytwo pointers
Rating 2100
原题1418D
Trash Problem
data structuresimplementation
Rating 2100
原题1365F
Swaps Again
constructive algorithmsimplementationsortings
Rating 2100
原题1360H
Binary Median
binary searchbitmasksbrute forceconstructive algorithms
Rating 2100
原题372C
Watching Fireworks is Fun
data structuresdpmath
Rating 2100
原题1560F2
Nearest Beautiful Number (hard version)
bitmasksbrute forceconstructive algorithmsdfs and similardpgreedy
Rating 2100
原题1364D
Ehab's Last Corollary
constructive algorithmsdfs and similargraphsgreedyimplementationtrees
Rating 2100
原题2004E
Not a Nim Problem
brute forcegamesmathnumber theory
Rating 2100
原题877D
Olya and Energy Drinks
data structuresdfs and similargraphsshortest paths
Rating 2100
原题1409F
Subsequences of Length Two
dpstrings
Rating 2100
原题1433G
Reducing Delivery Cost
brute forcegraphsshortest paths
Rating 2100
原题1420C2
Pokémon Army (hard version)
data structuresdivide and conquerdpgreedyimplementation
Rating 2100
原题1370E
Binary Subsequence Rotation
binary searchconstructive algorithmsdata structuresgreedy
Rating 2100
原题1516D
Cut
binary searchdata structuresdpgraphsnumber theorytwo pointers
Rating 2100
原题1538G
Gift Set
binary searchgreedymathternary search
Rating 2100
原题1117D
Magic Gems
dpmathmatrices
Rating 2100
原题734E
Anton and Tree
dfs and similardptrees
Rating 2100
原题1372D
Omkar and Circle
brute forcedpgamesgreedy
Rating 2100
原题1472G
Moving to the Capital
dfs and similardpgraphsshortest paths
Rating 2100
原题1343E
Weights Distributing
brute forcegraphsgreedyshortest pathssortings
Rating 2100
原题1493D
GCD of an Array
brute forcedata structureshashingimplementationmathnumber theorysortingstwo pointers
Rating 2100
原题1355E
Restorer Distance
binary searchgreedymathsortingsternary search
Rating 2100
原题1450C1
Errich-Tac-Toe (Easy Version)
constructive algorithmsmath
Rating 2100
原题1217D
Coloring Edges
constructive algorithmsdfs and similargraphs
Rating 2100
原题455C
Civilization
dfs and similardpdsuternary searchtrees
Rating 2100
原题1C
Ancient Berland Circus
geometrymath
Rating 2100
原题319C
Kalila and Dimna in the Logging Industry
dpgeometry
Rating 2100
原题1000E
We Need More Bosses
dfs and similargraphstrees
Rating 2100
原题1433F
Zero Remainder Sum
dp
Rating 2100
原题1207F
Remainder Problem
brute forcedata structuresimplementation
Rating 2100
原题343D
Water Tree
data structuresdfs and similargraphstrees
Rating 2100
原题1006F
Xor-Paths
bitmasksbrute forcedpmeet-in-the-middle
Rating 2100
原题1499D
The Number of Pairs
dpmathnumber theory
Rating 2100
原题620E
New Year Tree
bitmasksdata structurestrees
Rating 2100
原题796D
Police Stations
constructive algorithmsdfs and similardpgraphsshortest pathstrees
Rating 2100
原题1312E
Array Shrinking
dpgreedy
Rating 2100
原题484B
Maximum Value
binary searchmathsortingstwo pointers
Rating 2100
原题837D
Round Subset
dpmath
Rating 2100
原题920E
Connected Components?
data structuresdfs and similardsugraphs
Rating 2100
原题519E
A and B and Lecture Rooms
binary searchdata structuresdfs and similardptrees
Rating 2100
原题208E
Blood Cousins
binary searchdata structuresdfs and similartrees
Rating 2100
原题321C
Ciel the Commander
constructive algorithmsdfs and similardivide and conquergreedytrees
Rating 2100
原题1486D
Max Median
binary searchdata structuresdp
Rating 2100
原题609E
Minimum spanning tree for each edge
data structuresdfs and similardsugraphstrees
Rating 2100
原题1187E
Tree Painting
dfs and similardptrees
Rating 2100
原题474F
Ant colony
data structuresmathnumber theory
Rating 2100
原题