cf/mirror
11,311/11,320 captured·📄 81 PDFs⊘ 0 skipped9 remaining100%

Problemset

133 problems · filtered by 3 tags

✓#Name✎Rating↕Solved↕
2244DYaroslav and Productivity
constructive algorithmsdpgreedymathnumber theory
unrated11.4k
2244EMasha and the Garland
data structuresdpgreedyimplementationmathnumber theorystrings
unrated7.6k
2241EFair and Square
combinatoricsdpgraphsmathnumber theorytrees
16005.8k
2238BCrimson Triples
dpmathnumber theory
90015.2k
2236F2Elections in Saransk (hard version)
combinatoricsdpmathnumber theory
2200958
2234DXOR, Expression and Two Binary Numbers
bitmasksdivide and conquerdpmathnumber theory
15008.6k
2233FShortest GCD Paths
dpgraphsmathnumber theoryshortest paths
2800385
2211EMinimum Path Cover
brute forcedpgreedyinteractivemathnumber theorytrees
25001k
2206IGrowth Factor
combinatoricsdpmathnumber theory
2900226
2194CSecret message
bitmasksbrute forcedpmathnumber theory
130011.6k
2193EProduct Queries
dpmathnumber theoryshortest paths
130016.2k
2189D1Little String (Easy Version)
combinatoricsdpgreedymathnumber theory
19004.2k
2189D2Little String (Hard Version)
combinatoricsdpgreedymathnumber theory
22002.1k
2183ELCM is Legendary Counting Master
dpmathnumber theory
21003k
2176FOmega Numbers
bitmaskscombinatoricsdpmathnumber theory
24001.6k
2145FLong Journey
dfs and similardivide and conquerdpgraphsgreedymathmatricesnumber theory
25001.1k
2135E2Beyond the Palindrome (Hard Version)
combinatoricsdpmathnumber theory
3500188
2118D2Red Light, Green Light (Hard version)
binary searchbrute forcedata structuresdfs and similardpgraphsimplementationmathnumber theory
22002.6k
2115AGellyfish and Flaming Peony
constructive algorithmsdpmathnumber theory
150016.5k
2114FSmall Operations
binary searchbrute forcedfs and similardpmathnumber theorysortings
20005.6k
2114GBuild an Array
brute forceconstructive algorithmsdpgreedymathnumber theory
22002.1k
2112ETree Colorings
combinatoricsdfs and similardpgraphsmathnumber theorytrees
22003.5k
2091GGleb and Boating
brute forceconstructive algorithmsdata structuresdpgraphsgreedymathnumber theoryshortest paths
23001.6k
2040FNumber of Cubes
combinatoricsdpmathnumber theory
2700469
2039F1Shohag Loves Counting (Easy Version)
combinatoricsdpmathnumber theory
2800527
2038KGrid Walk
brute forcedpgreedymathnumber theory
21001.8k
2037GNatlan Exploring
bitmaskscombinatoricsdata structuresdpmathnumber theory
20003.9k
2020FCount Leaves
dpmathnumber theory
2900272
2013EPrefix GCD
brute forcedpgreedymathnumber theory
22004.4k
2002F1Court Blue (Easy Version)
brute forcedfs and similardpmathnumber theory
26001k
2002F2Court Blue (Hard Version)
brute forcedpmathnumber theory
2800597
1991HPrime Split Game
bitmasksdpfftgamesmathnumber theory
3300580
1977CNikita and LCM
brute forcedata structuresdpgreedymathnumber theorysortings
19008.2k
1957ECarousel of Combinations
brute forcecombinatoricsdpmathnumber theory
24001.7k
1955GGCD on a grid
brute forcedfs and similardpimplementationmathnumber theory
19006.1k
1946EGirl Permutation
combinatoricsdpmathnumber theory
22003.2k
1928EModular Sequence
brute forceconstructive algorithmsdpgraphsgreedymathnumber theory
23002.3k
1926EVlad and an Odd Ordering
binary searchbitmasksdata structuresdpimplementationmathnumber theory
150015.2k
1917DYet Another Inversions Problem
combinatoricsdata structuresdpimplementationmathnumber theory
23002.1k
1900DSmall GCD
bitmasksbrute forcedpmathnumber theory
20005.6k
1896H1Cyclic Hamming (Easy Version)
brute forcedivide and conquerdpfftmathnumber theory
3400181
1896H2Cyclic Hamming (Hard Version)
brute forcedpfftmathnumber theory
3500164
1884DCounting Rhyme
dpmathnumber theory
21004.3k
1858BThe Walkway
brute forcedpgreedymathnumber theory
150013.2k
1845FSwimmers in the Pool
dpfftmathnumber theory
2800475
1815EBosco and Particle
dpmathnumber theorystrings
3100466
1811ELiving Sequence
binary searchdpmathnumber theory
150014.6k
1801FAnother n-dimensional chocolate bar
dpmathmeet-in-the-middlenumber theory
2700758
1798FGifts from Grandfather Ahmed
dpmathnumber theory
2500688
1794DCounting Factorizations
combinatoricsdivide and conquerdpmathnumber theory
19004.6k
1789EServal and Music Game
brute forcedpimplementationmathnumber theory
25001k
1778FMaximizing Root
dfs and similardpgraphsmathnumber theorytrees
2600964
1770FKoxia and Sequence
bitmaskscombinatoricsdpmathnumber theory
31001k
1763DValid Bitonic Permutations
combinatoricsdpimplementationmathnumber theory
22002.4k
1763ENode Pairs
dpgraphsmathnumber theory
22002.3k
1749DCounting Arrays
combinatoricsdpmathnumber theory
19006.4k
1732ELocation
data structuresdpmathnumber theory
2800604
1731EGraph Cost
dpgreedymathnumber theory
20003.6k
1725EElectrical Efficiency
combinatoricsdata structuresdpmathnumber theorytrees
2500640
1716FBags with Balls
combinatoricsdpmathnumber theory
25001.5k
1706D2Chopping Carrots (Hard Version)
brute forceconstructive algorithmsdata structuresdpgreedymathnumber theorytwo pointers
24002k
1699EThree Days Grace
data structuresdpgreedymathnumber theorytwo pointers
26001.4k
1673CPalindrome Basis
brute forcedpmathnumber theory
150018.9k
1658EGojou and Matrix Game
data structuresdpgameshashingimplementationmathnumber theorysortings
25001.3k
1647DMadoka and the Best School in Russia
constructive algorithmsdpmathnumber theory
19005.7k
1646EPower Board
brute forcedpmathnumber theory
22002.8k
1635DInfinite Set
bitmasksdpmathmatricesnumber theorystrings
18007.1k
1627DNot Adding
brute forcedpmathnumber theory
19009.5k
1626FA Random Code Problem
combinatoricsdpmathnumber theoryprobabilities
2800922
1617EChristmas Chocolates
dfs and similardpgamesgraphsimplementationmathnumber theoryshortest pathstrees
27001.1k
1610DNot Quite Lee
combinatoricsdpmathnumber theory
20003.1k
1603CExtreme Extension
dpgreedymathnumber theory
23002.3k
1566HXor-quiz
constructive algorithmsdpinteractivemathnumber theory
3200177
1561D1Up the Strip (simplified version)
brute forcedata structuresdpmathnumber theory
17006.2k
1559EMocha and Stars
combinatoricsdpfftmathnumber theory
22002.8k
1558BUp the Strip
brute forcedpmathnumber theorytwo pointers
19005.3k
1554EYou
dfs and similardpmathnumber theory
26001.4k
1538FInteresting Function
binary searchdpmathnumber theory
150022.5k
1526BI Hate 1111
dpmathnumber theory
140037.5k
1512GShort Task
brute forcedpmathnumber theory
17009.6k
1510DDigits
dpmathnumber theory
21002.1k
1499DThe Number of Pairs
dpmathnumber theory
21007.3k
1497E1Square-Free Division (easy version)
data structuresdpgreedymathnumber theorytwo pointers
17009.2k
1497E2Square-Free Division (hard version)
data structuresdpgreedymathnumber theorytwo pointers
25002k
1479ESchool Clubs
dpfftmathnumber theoryprobabilities
3500432
1475GStrange Beauty
dpmathnumber theorysortings
19008k
1401DMaximum Distributed Tree
dfs and similardpgreedyimplementationmathnumber theorysortingstrees
180010.7k
1371E2Asterism (Hard Version)
binary searchcombinatoricsdpmathnumber theorysortings
23002.5k
1350BOrac and Models
dpmathnumber theory
140030.7k
1292DChaotic V.
dpgraphsgreedymathnumber theorytrees
27001.1k
1278FCards
combinatoricsdpmathnumber theoryprobabilities
26002.7k
1204ENatasha, Sasha and the Prefix Sums
combinatoricsdpmathnumber theory
23002.2k
1200FGraph Traveler
brute forcedata structuresdfs and similardpgraphsimplementationmathnumber theory
23001.2k
1182EProduct Oriented Recurrence
dpmathmatricesnumber theory
23003.5k
1174EEhab and the Expected GCD Problem
combinatoricsdpmathnumber theory
25001.8k
1139DSteps to One
dpmathnumber theoryprobabilities
23002.8k
1107DCompression
dpimplementationmathnumber theory
18003.9k
1097DMakoto and a Blackboard
dpmathnumber theoryprobabilities
22003.2k
1061CMultiplicity
data structuresdpimplementationmathnumber theory
170011k
1043FMake It One
bitmaskscombinatoricsdpmathnumber theoryshortest paths
25003.1k

showing 1–100 of 133