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570 problems · filtered by 2 tags

✓#Name✎Rating↕Solved↕
2245D2Construct an Array (Hard Version)
2-satconstructive algorithmsdfs and similargraphsimplementation
unrated1.7k
2222GStatistics on Tree
binary searchbrute forcedfs and similardivide and conquergraphstrees
3100215
2208D1Tree Orientation (Easy Version)
constructive algorithmsdfs and similardsugraphsgreedymatricestrees
18004.8k
2208D2Tree Orientation (Hard Version)
dfs and similardsugraphsgreedysortingstrees
22002.1k
2204DAlternating Path
constructive algorithmsdfs and similargraph matchingsgraphs
140010k
2196C1Interactive Graph (Simple Version)
binary searchcombinatoricsdfs and similardpgraphsinteractive
18003.9k
2196C2Interactive Graph (Hard Version)
combinatoricsdfs and similardpgraphsinteractive
20002.7k
2193HRemove the Grail Tree
dfs and similardpgraphsgreedyimplementationtrees
24001.1k
2192ESwap to Rearrange
constructive algorithmsdfs and similargraph matchingsgraphsgreedystrings
21002.3k
2187CJerry and Tom
data structuresdfs and similardsugamesgraphsgreedytrees
23001.5k
2184CHuge Pile
binary searchdfs and similardpgraphsmath
110023k
2184FCherry Tree
dfs and similardpgraphstrees
19004.2k
2164EJourney
data structuresdfs and similardsugraphsgreedy
23003.6k
2164F2Chain Prefix Rank (Hard Version)
binary searchcombinatoricsdata structuresdfs and similardpgraphsmathtrees
2900648
2155FJuan's Colorful Tree
data structuresdfs and similardsugraphsmeet-in-the-middletrees
2800745
2154DCatshock
constructive algorithmsdfs and similargraphstreestwo pointers
19005k
2145FLong Journey
dfs and similardivide and conquerdpgraphsgreedymathmatricesnumber theory
25001.1k
2143CMax Tree
constructive algorithmsdfs and similargraphsgreedy
130014.9k
2141HMerging Vertices in a Graph
*specialdfs and similardsugraphs
270085
2138C1Maple and Tree Beauty (Easy Version)
brute forcedfs and similardpgraphstrees
18005.7k
2137GCry Me a River
dfs and similardpgamesgraphs
22002k
2135CBy the Assignment
binary searchbitmaskscombinatoricsdfs and similardsugraphsmath
20005.4k
2132FRada and the Chamomile Valley
dfs and similargraphsshortest paths
21002.9k
2127DRoot was Built by Love, Broken by Destiny
combinatoricsdfs and similargraphstrees
18007.5k
2127H23 Rises Again
brute forcedfs and similardpflowsgraph matchingsgraphsgreedyimplementationprobabilitiestrees
31001.9k
2126F1-1-1, Free Tree!
brute forcedata structuresdfs and similargraphsimplementationtrees
20004.4k
2118D1Red Light, Green Light (Easy version)
brute forcedfs and similardpgraphsimplementationnumber theory
17008.6k
2118D2Red Light, Green Light (Hard version)
binary searchbrute forcedata structuresdfs and similardpgraphsimplementationmathnumber theory
22002.6k
2115BGellyfish and Camellia Japonica
brute forceconstructive algorithmsdfs and similardpgraphsgreedytrees
21005k
2113EFrom Kazan with Love
dfs and similargraphsimplementationtrees
2800430
2113FTwo Arrays
constructive algorithmsdfs and similargraphsmath
2500992
2112DReachability and Tree
constructive algorithmsdfs and similargraphstrees
17009.8k
2112ETree Colorings
combinatoricsdfs and similardpgraphsmathnumber theorytrees
22003.5k
2110DFewer Batteries
binary searchdfs and similardpgraphsgreedyhashing
17008.8k
2110EMelody
dfs and similargraphsimplementation
23002.8k
2109DD/D/D
dfs and similargraphsgreedyshortest paths
19005.8k
2109FPenguin Steps
binary searchdfs and similarflowsgraphsshortest paths
3000284
2108ESpruce Dispute
constructive algorithmsdfs and similargraphsgreedyimplementationshortest pathstrees
2600922
2097BBaggage Claim
combinatoricsdfs and similardpdsugraphsimplementationmathtrees
23002k
2086CDisappearing Permutation
dfs and similardpdsugraphsgreedyimplementation
130016.6k
2077GRGB Walking
bitmaskschinese remainder theoremdfs and similargraphsnumber theory
3500142
2069FGraph Inclusion
data structuresdfs and similardivide and conquerdsugraphs
2800824
2068EPorto Vs. Benfica
data structuresdfs and similardsugraphsshortest paths
2800384
2065FSkibidus and Slay
data structuresdfs and similargraphsgreedytrees
17007.3k
2063CRemove Exactly Two
brute forcedata structuresdfs and similardpgraphsgreedysortingstrees
160015.1k
2063F1Counting Is Not Fun (Easy Version)
combinatoricsdata structuresdfs and similardpdsugraphshashingimplementationmathtrees
24001.6k
2063F2Counting Is Not Fun (Hard Version)
combinatoricsdata structuresdfs and similardsugraphsimplementationtrees
2700951
2062DBalanced Tree
dfs and similardpgraphsgreedytrees
22003.6k
2062E1The Game (Easy Version)
data structuresdfs and similargamesgraphsgreedytrees
20004.4k
2062E2The Game (Hard Version)
data structuresdfs and similargamesgraphsimplementationtrees
3000464
2060EGraph Composition
dfs and similardsugraphsgreedy
150012.7k
2057E2Another Exercise on Graphs (hard version)
binary searchdfs and similardpdsugraphsshortest pathssortings
25002k
2056BFind the Permutation
brute forcedfs and similargraphsimplementationsortings
130018.2k
2053EResourceful Caterpillar Sequence
dfs and similardpgamesgraphsgreedytrees
19004.6k
2045MMirror Maze
brute forcedfs and similargraphsimplementation
18002.3k
2044G1Medium Demon Problem (easy version)
dfs and similargraph matchingsgraphsimplementationtrees
17007.6k
2044G2Medium Demon Problem (hard version)
dfs and similardpdsugraphsimplementationtrees
19004k
2043EMatrix Transformation
bitmasksbrute forcedata structuresdfs and similargraphsgreedyimplementation
23001.9k
2041DDrunken Maze
brute forcedfs and similargraphsshortest paths
17005.3k
2041KTrophic Balance Species
binary searchbrute forcedfs and similargraphs
3100122
2040EControl of Randomness
combinatoricsdfs and similardpgraphsgreedymathprobabilitiestrees
21002.8k
2034CTrapped in the Witch's Labyrinth
constructive algorithmsdfs and similargraphsimplementation
14009.4k
2033ESakurako, Kosuke, and the Permutation
brute forcedata structuresdfs and similardsugraphsgreedymath
140014.5k
2029DCool Graph
constructive algorithmsdata structuresdfs and similardsugraphsgreedytrees
19004k
2027CAdd Zeros
brute forcedata structuresdfs and similardpgraphsgreedy
150014.1k
2026EBest Subsequence
bitmasksdfs and similarflowsgraph matchingsgraphs
25002.1k
2025FChoose Your Queries
constructive algorithmsdfs and similardpgraphsgreedytrees
27001.1k
2023CC+K+S
constructive algorithmsdfs and similargraphsgreedyhashingimplementationstrings
24001.4k
2022E1Billetes MX (Easy Version)
2-satbinary searchcombinatoricsconstructive algorithmsdfs and similardsugraphs
2500780
2021E1Digital Village (Easy Version)
brute forcedata structuresdfs and similardpdsufftgraphsgreedyimplementationmathtrees
23002k
2021E3Digital Village (Extreme Version)
data structuresdfs and similardpdsugraphsgreedymathtrees
2800725
2014ERendez-vous de Marian et Robin
dfs and similargraphsshortest paths
18009.2k
2006AIris and Game on the Tree
constructive algorithmsdfs and similargamesgraphsgreedytrees
17009.8k
2003D2Turtle and a MEX Problem (Hard Version)
dfs and similardpgraphsgreedyimplementationmath
21004.7k
2002D1DFS Checker (Easy Version)
brute forcedata structuresdfs and similargraphshashingtrees
19005.2k
2002D2DFS Checker (Hard Version)
binary searchdata structuresdfs and similargraphshashingtrees
23002.9k
1994FStardew Valley
constructive algorithmsdfs and similargraphstrees
25001.6k
1991EColoring Game
constructive algorithmsdfs and similargamesgraphsgreedyinteractive
19005.2k
1989FSimultaneous Coloring
dfs and similardivide and conquergraphs
3000620
1986FNon-academic Problem
dfs and similargraphstrees
19006.7k
1985H1Maximize the Largest Component (Easy Version)
brute forcedata structuresdfs and similardsugraphsimplementation
17007.4k
1981DTurtle and Multiplication
constructive algorithmsdfs and similargraphsnumber theory
24002.2k
1980GYasya and the Mysterious Tree
bitmasksdata structuresdfs and similargraphsgreedystringstrees
23001.8k
1978FLarge Graph
data structuresdfs and similardsugraphsnumber theorytwo pointers
24001.6k
1971H±1
2-satdfs and similargraphs
21002.9k
1970G2Min-Fund Prison (Medium)
brute forcedfs and similardpgraphstrees
2200907
1970G3Min-Fund Prison (Hard)
bitmasksdfs and similardpgraphstrees
2400574
1968DPermutation Game
brute forcedfs and similargamesgraphsgreedymath
130017.7k
1967DLong Way to be Non-decreasing
binary searchdfs and similargraphsimplementationshortest pathstwo pointers
2800998
1950GShuffling Songs
bitmasksdfs and similardpgraphshashingimplementationstrings
19006.3k
1949IDisks
dfs and similargeometrygraph matchingsgraphs
18002.8k
1948CArrow Path
brute forceconstructive algorithmsdfs and similardpgraphsshortest paths
130021.5k
1941GRudolf and Subway
constructive algorithmsdfs and similargraphsshortest paths
20004.8k
1940AParallel Universes
*specialconstructive algorithmsdfs and similardsugraphs
unrated106
1940CBurenka and Pether
*specialdata structuresdfs and similardivide and conquerdsugraphssortingstrees
unrated44
1939BEvidence Board
*specialconstructive algorithmsdfs and similargraphstrees
unrated308
1933FTurtle Mission: Robot and the Earthquake
dfs and similardpgraphsshortest paths
21003k
1931FChat Screenshots
combinatoricsdfs and similargraphs
170012.5k
1929ESasha and the Happy Tree Cutting
bitmasksbrute forcedfs and similardpgraphsgreedymathtrees
23002.1k
1927FMicrocycle
data structuresdfs and similardsugraphsgreedyimplementationsortingstrees
19005.6k

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