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Problemset

11,320 problems

✓#Name✎Rating↕Solved↕
1720D1Xor-Subsequence (easy version)
bitmasksbrute forcedpstringstreestwo pointers
18006.8k
1720D2Xor-Subsequence (hard version)
bitmasksdata structuresdpstringstrees
24002.3k
1720EMisha and Paintings
constructive algorithmsdata structuresgreedyimplementationmath
27001k
1719AChip Game
gamesmath
80026.9k
1719BMathematical Circus
constructive algorithmsmath
80019.2k
1719CFighting Tournament
binary searchdata structuresimplementationtwo pointers
140014.5k
1718A1Burenka and Traditions (easy version)
dpgreedy
18006.5k
1718A2Burenka and Traditions (hard version)
data structuresdpgreedy
19006k
1718BFibonacci Strings
greedyimplementationmathnumber theory
20003.5k
1718CTonya and Burenka-179
data structuresgreedymathnumber theory
24001.9k
1718DPermutation for Burenka
data structuresgraph matchingsgreedymathtrees
3300449
1718EImpressionism
constructive algorithmsgraphsimplementationmath
3500228
1718FBurenka, an Array and Queries
data structuresmathnumber theory
3300244
1717AMadoka and Strange Thoughts
mathnumber theory
80021.1k
1717BMadoka and Underground Competitions
constructive algorithmsimplementation
110015.7k
1717CMadoka and Formal Statement
greedy
130016k
1717DMadoka and The Corruption Scheme
combinatoricsconstructive algorithmsgreedymath
19004.9k
1717EMadoka and The Best University
mathnumber theory
22003.6k
1717FMadoka and The First Session
constructive algorithmsflowsgraph matchingsgraphsimplementation
2500788
1716A2-3 Moves
greedymath
80036.3k
1716BPermutation Chain
constructive algorithmsmath
80022.1k
1716CRobot in a Hallway
data structuresdpgreedyimplementationternary search
20004.7k
1716DChip Move
brute forcedpmath
20006.3k
1716ESwap and Maximum Block
bitmasksdata structuresdfs and similardivide and conquerdp
25001.4k
1716FBags with Balls
combinatoricsdpmathnumber theory
25001.5k
1715ACrossmarket
constructive algorithmsgreedymath
80024.4k
1715BBeautiful Array
constructive algorithmsgreedymath
100035.8k
1715CMonoblock
combinatoricsdata structuresimplementationmath
170010.7k
1715D2+ doors
2-satbitmasksgraphsgreedy
19006.2k
1715ELong Way Home
data structuresdivide and conquerdpgeometrygraphsgreedyshortest paths
24002.4k
1715FCrop Squares
constructive algorithmsgeometryinteractivemath
2700603
1714AEveryone Loves to Sleep
implementationmath
90033.5k
1714BRemove Prefix
data structuresgreedyimplementation
80034.3k
1714CMinimum Varied Number
greedy
80033.7k
1714DColor with Occurrences
brute forcedata structuresdpgreedystrings
160010.5k
1714EAdd Modulo 10
brute forcemathnumber theory
140024.7k
1714FBuild a Tree and That Is It
constructive algorithmsimplementationtrees
19003.7k
1714GPath Prefixes
binary searchdata structuresdfs and similartrees
17009.9k
1713ATraveling Salesman Problem
geometrygreedyimplementation
80022.9k
1713BOptimal Reduction
constructive algorithmssortings
100022.8k
1713CBuild Permutation
constructive algorithmsdpmath
120019k
1713DTournament Countdown
constructive algorithmsgreedyinteractivenumber theoryprobabilities
18006.3k
1713ECross Swapping
2-satdata structuresdsugreedymatrices
24002k
1713FLost Array
bitmaskscombinatoricsconstructive algorithmsdpmath
2900771
1712AWonderful Permutation
greedyimplementation
80025.2k
1712BWoeful Permutation
constructive algorithmsgreedynumber theory
80022.5k
1712CSort Zero
greedysortings
110021.4k
1712DEmpty Graph
binary searchconstructive algorithmsdata structuresgreedyshortest paths
20005.2k
1712E1LCM Sum (easy version)
binary searchbrute forcecombinatoricsmathnumber theorytwo pointers
23002.5k
1712E2LCM Sum (hard version)
brute forcedata structuresmathnumber theorytwo pointers
25001.7k
1712FTriameter
binary searchdata structuresdfs and similartrees
3200508
1711APerfect Permutation
constructive algorithms
80026.7k
1711BParty
brute forcegraphs
130014.5k
1710AColor the Picture
constructive algorithmsgreedymath
150012k
1710BRain
binary searchbrute forcedata structuresgeometrygreedyimplementationmath
21002.8k
1710CXOR Triangle
bitmasksbrute forceconstructive algorithmsdpgreedymath
25001.7k
1710DRecover the Tree
constructive algorithmstrees
3400565
1710ETwo Arrays
binary searchgamesgraph matchings
2400590
1709AThree Doors
brute forcegreedyimplementationmath
80031.8k
1709BAlso Try Minecraft
data structuresdpimplementation
90026.4k
1709CRecover an RBS
constructive algorithmsgreedyimplementationstrings
180010.5k
1709DRorororobot
binary searchdata structuresgreedymath
170010.6k
1709EXOR Tree
bitmasksdata structuresdfs and similardsugreedytrees
24004.2k
1709FMultiset of Strings
bitmasksbrute forcedpfftflowsgraphsmathmeet-in-the-middletrees
2500729
1708ADifference Operations
greedymath
80022.7k
1708BDifference of GCDs
constructive algorithmsmath
110029.9k
1707ADoremy's IQ
binary searchconstructive algorithmsgreedyimplementation
160015.7k
1707BDifference Array
brute forcedata structuresimplementationsortings
19006.5k
1707CDFS Trees
dfs and similardsugraphsgreedysortingstrees
24002k
1707DPartial Virtual Trees
combinatoricsdfs and similardpmathtrees
30001k
1707EReplace
binary searchdata structures
3500950
1707FBugaboo
bitmasksconstructive algorithmsdpnumber theory
3500186
1706AAnother String Minimization Problem
2-satconstructive algorithmsgreedystring suffix structuresstrings
80024.3k
1706BMaking Towers
dpgreedymath
110017.6k
1706CQpwoeirut And The City
dpflowsgreedyimplementation
140016.3k
1706D1Chopping Carrots (Easy Version)
binary searchbrute forceconstructive algorithmsgreedynumber theory
17007.8k
1706D2Chopping Carrots (Hard Version)
brute forceconstructive algorithmsdata structuresdpgreedymathnumber theorytwo pointers
24002k
1706EQpwoeirut and Vertices
binary searchdata structuresdfs and similardivide and conquerdsugreedytrees
23004k
1705AMark the Photographer
greedysortings
80026.7k
1705BMark the Dust Sweeper
constructive algorithmsgreedyimplementation
90025.8k
1705CMark and His Unfinished Essay
brute forceimplementation
140014.7k
1705DMark and Lightbulbs
combinatoricsconstructive algorithmsgreedymathsortings
18007.2k
1705EMark and Professor Koro
binary searchbitmasksbrute forcecombinatoricsdata structuresgreedy
23002.5k
1705FMark and the Online Exam
bitmasksconstructive algorithmsinteractiveprobabilities
2900718
1704ATwo 0-1 Sequences
constructive algorithmsgreedy
80016.7k
1704BLuke is a Foodie
brute forcegreedyimplementation
100032.1k
1704CVirus
greedyimplementationsortings
120026.5k
1704DMagical Array
constructive algorithmshashingimplementationmath
19005.4k
1704ECount Seconds
brute forceconstructive algorithmsdpgraphsimplementationmath
22002.7k
1704FColouring Game
constructive algorithmsdpgames
26001.3k
1704GMio and Lucky Array
constructive algorithmsfftmathstrings
3500168
1704H1Game of AI (easy version)
combinatoricsconstructive algorithmsdpfftmath
3200350
1704H2Game of AI (hard version)
combinatoricsfftmath
3500119
1703AYES or YES?
brute forceimplementationstrings
800100.3k
1703BICPC Balloons
data structuresimplementation
80068.4k
1703CCypher
brute forceimplementationstrings
80041.4k
1703DDouble Strings
brute forcedata structuresstrings
110029.7k
1703EMirror Grid
implementation
120029.2k
1703FYet Another Problem About Pairs Satisfying an Inequality
binary searchdata structuresdpgreedysortings
130032k
1703GGood Key, Bad Key
bitmasksbrute forcedpgreedymath
160013k

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