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99 problems · filtered by 3 tags

✓#Name✎Rating↕Solved↕
2244EMasha and the Garland
data structuresdpgreedyimplementationmathnumber theorystrings
unrated7.6k
2179HBlackslex and Plants
bitmasksdata structuresdpimplementationmath
22001.4k
2132DFrom 1 to Infinity
binary searchdpimplementationmath
16009.2k
2129DPermutation Blackhole
brute forcecombinatoricsdpimplementationmath
26002.5k
2118D2Red Light, Green Light (Hard version)
binary searchbrute forcedata structuresdfs and similardpgraphsimplementationmathnumber theory
22002.6k
2111BFibonacci Cubes
brute forcedpimplementationmath
110018.2k
2107CMaximum Subarray Sum
binary searchconstructive algorithmsdpimplementationmath
150012.5k
2104FNumbers and Strings
binary searchbrute forcedfs and similardpimplementationmath
2600742
2097BBaggage Claim
combinatoricsdfs and similardpdsugraphsimplementationmathtrees
23002k
2084EBlossom
binary searchcombinatoricsdpimplementationmathtwo pointers
24001.8k
2075EXOR Matrix
bitmaskscombinatoricsdpimplementationmath
25001.2k
2071D1Infinite Sequence (Easy Version)
bitmasksbrute forcedpimplementationmath
18006.9k
2071D2Infinite Sequence (Hard Version)
bitmasksbrute forceconstructive algorithmsdata structuresdpimplementationmath
25001.1k
2063F1Counting Is Not Fun (Easy Version)
combinatoricsdata structuresdfs and similardpdsugraphshashingimplementationmathtrees
24001.6k
2053FEarnest Matrix Complement
brute forcedata structuresdpgreedyimplementationmath
2600963
2048FKevin and Math Class
brute forcedata structuresdivide and conquerdpimplementationmathtrees
25001.3k
2044HHard Demon Problem
constructive algorithmsdata structuresdpimplementationmath
21002.7k
2039EShohag Loves Inversions
combinatoricsdpimplementationmath
22002.4k
2031EPenchick and Chloe's Trees
data structuresdfs and similardpgreedyimplementationmathsortingstrees
21002.8k
2030EMEXimize the Score
combinatoricsdata structuresdpgreedyimplementationmath
22002k
2026DSums of Segments
binary searchdata structuresdpimplementationmath
19006.1k
2025DAttribute Checks
brute forcedata structuresdpimplementationmathtwo pointers
18008k
2021E1Digital Village (Easy Version)
brute forcedata structuresdfs and similardpdsufftgraphsgreedyimplementationmathtrees
23002k
2003D2Turtle and a MEX Problem (Hard Version)
dfs and similardpgraphsgreedyimplementationmath
21004.7k
2000FColor Rows and Columns
dpgreedyimplementationmath
19007.1k
1999ETriple Operations
dpimplementationmath
130024.3k
1986DMathematical Problem
brute forcedpgreedyimplementationmathtwo pointers
140018.2k
1973AChess For Three
brute forcedpimplementationmath
90028.9k
1956DNene and the Mex Operator
bitmasksbrute forceconstructive algorithmsdivide and conquerdpgreedyimplementationmath
20004.9k
1955GGCD on a grid
brute forcedfs and similardpimplementationmathnumber theory
19006.1k
1926EVlad and an Odd Ordering
binary searchbitmasksdata structuresdpimplementationmathnumber theory
150015.2k
1921FSum of Progression
brute forcedata structuresdpimplementationmath
19005.2k
1919ECounting Prefixes
combinatoricsconstructive algorithmsdpimplementationmath
26001.2k
1917DYet Another Inversions Problem
combinatoricsdata structuresdpimplementationmathnumber theory
23002.1k
1901DYet Another Monster Fight
binary searchdpgreedyimplementationmath
17008.8k
1895CTorn Lucky Ticket
brute forcedphashingimplementationmath
140013.3k
1870CColorful Table
binary searchdata structuresdpimplementationmathtwo pointers
130013.3k
1868B2Candy Party (Hard Version)
bitmasksconstructive algorithmsdpgreedyimplementationmath
21002.8k
1868CTravel Plan
combinatoricsdpimplementationmathtrees
24001.4k
1861ENon-Intersecting Subpermutations
combinatoricsdpimplementationmath
23002.1k
1856E2PermuTree (hard version)
bitmasksdfs and similardpfftgreedyimplementationmathtrees
27001.8k
1845EBoxes and Balls
dpimplementationmath
25001.7k
1844CParticles
dpgreedyimplementationmath
130018.1k
1829GHits Different
data structuresdpimplementationmath
160015.9k
1819CThe Fox and the Complete Tree Traversal
constructive algorithmsdpimplementationmathtrees
24001.8k
1809ETwo Tanks
binary searchdpimplementationmath
24001.1k
1793DMoscow Gorillas
binary searchdpgreedyimplementationmathtwo pointers
18007.2k
1789CServal and Toxel's Arrays
combinatoricsdpimplementationmath
150010.1k
1789EServal and Music Game
brute forcedpimplementationmathnumber theory
25001k
1763DValid Bitonic Permutations
combinatoricsdpimplementationmathnumber theory
22002.4k
1704ECount Seconds
brute forceconstructive algorithmsdpgraphsimplementationmath
22002.7k
1697EColoring
brute forcecombinatoricsconstructive algorithmsdpgeometrygraphsgreedyimplementationmath
24001.5k
1696HMaximum Product?
brute forcecombinatoricsdpgreedyimplementationmathtwo pointers
3500215
1659CLine Empire
binary searchbrute forcedpgreedyimplementationmath
150015.8k
1658EGojou and Matrix Game
data structuresdpgameshashingimplementationmathnumber theorysortings
25001.3k
1626CMonsters And Spells
binary searchdata structuresdpgreedyimplementationmathtwo pointers
170012k
1620CBA-String
brute forcedpgreedyimplementationmath
18007.3k
1619EMEX and Increments
constructive algorithmsdata structuresdpgreedyimplementationmathsortings
170010.3k
1617EChristmas Chocolates
dfs and similardpgamesgraphsimplementationmathnumber theoryshortest pathstrees
27001.1k
1603FOctober 18, 2017
combinatoricsdpimplementationmath
2700402
1598CDelete Two Elements
data structuresdpimplementationmathtwo pointers
120023.9k
1598EStaircases
brute forcecombinatoricsdata structuresdfs and similardpimplementationmath
21002.5k
1594E2Rubik's Cube Coloring (hard version)
brute forcedpimplementationmathtrees
23001.7k
1593FRed-Black Number
dfs and similardpimplementationmathmeet-in-the-middle
21002.7k
1542DPriority Queue
combinatoricsdpimplementationmathternary search
22003k
1519DMaximum Sum of Products
brute forcedpimplementationmathtwo pointers
160017.9k
1485BReplace and Keep Sorted
dpimplementationmath
120018k
1408CDiscrete Acceleration
binary searchdpimplementationmathtwo pointers
15009.3k
1403CChess Rush
*specialcombinatoricsdpimplementationmath
320095
1401DMaximum Distributed Tree
dfs and similardpgreedyimplementationmathnumber theorysortingstrees
180010.7k
1339AFilling Diamonds
brute forcedpimplementationmath
90034.5k
1307ECow and Treats
binary searchcombinatoricsdpgreedyimplementationmath
25001.5k
1286FHarry The Potter
brute forceconstructive algorithmsdpfftimplementationmath
3100411
1202CYou Are Given a WASD-string...
brute forcedata structuresdpgreedyimplementationmathstrings
21002.8k
1200FGraph Traveler
brute forcedata structuresdfs and similardpgraphsimplementationmathnumber theory
23001.2k
1189CCandies!
data structuresdpimplementationmath
140011.1k
1180AAlex and a Rhombus
dpimplementationmath
80027.7k
1107DCompression
dpimplementationmathnumber theory
18003.9k
1061CMultiplicity
data structuresdpimplementationmathnumber theory
170011k
1051CVasya and Multisets
brute forcedpgreedyimplementationmath
150010k
959EMahmoud and Ehab and the xor-MST
bitmasksdpgraphsimplementationmath
19003.8k
917AThe Monster
dpgreedyimplementationmath
18003.7k
830EPerpetual Motion Machine
constructive algorithmsdpgraphsimplementationmathtrees
3100373
718AEfim and Strange Grade
dpimplementationmath
17004.6k
704CBlack Widow
dpgraphsimplementationmath
2900562
696CPLEASE
combinatoricsdpimplementationmathmatrices
20002.3k
651AJoysticks
dpgreedyimplementationmath
110024.3k
641DLittle Artem and Random Variable
dpimplementationmathprobabilities
24001.6k
633DFibonacci-ish
brute forcedphashingimplementationmath
20003.1k
417AElimination
dpimplementationmath
15003.4k
385CBear and Prime Numbers
binary searchbrute forcedata structuresdpimplementationmathnumber theory
170010.8k
375ERed and Black Tree
dpimplementationmath
3000639
362CInsertion Sort
data structuresdpimplementationmath
19002k
351AJeff and Rounding
dpgreedyimplementationmath
18003.1k
288EPolo the Penguin and Lucky Numbers
dpimplementationmath
2800378
280ESequence Transformation
brute forcedata structuresdpimplementationmath
3000327
276DLittle Girl and Maximum XOR
bitmasksdpgreedyimplementationmath
170016.8k
235ENumber Challenge
combinatoricsdpimplementationmathnumber theory
2600963
75DBig Maximum Sum
data structuresdpgreedyimplementationmathtrees
20002.1k

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