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Problemset

325 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
2245H	Connect Connect See brute force data structures	unrated	48
2242C	Unstable Elements brute force data structures implementation sortings two pointers	1300	10.5k
2236G	Criterion in Burlandia binary search bitmasks brute force data structures dfs and similar divide and conquer implementation trees two pointers	2600	385
2233D	Goods on the Shelf brute force data structures implementation two pointers	1900	3.4k
2227D	Palindromex binary search brute force constructive algorithms data structures greedy implementation two pointers	1200	13.9k
2205G	Simons and Diophantus Equation bitmasks brute force data structures math number theory	3000	231
2204F	Sum of Fractions binary search brute force combinatorics data structures greedy math number theory two pointers	2200	1.3k
2200F	Mooclear Reactor 2 brute force data structures greedy implementation sortings	1900	3.2k
2196E1	Fuzzy Concatenation (Easy Version) binary search bitmasks brute force data structures greedy string suffix structures	2900	311
2187E	Doors and Keys brute force data structures dp	3500	356
2185H	BattleCows 2 binary search brute force data structures dp greedy	2500	752
2182F2	Christmas Reindeer (hard version) bitmasks brute force combinatorics data structures greedy math	2500	1.1k
2173F	Isla's Memory Thresholds binary search brute force data structures divide and conquer math	2600	623
2164C	Dungeon binary search brute force data structures greedy sortings	1400	12.3k
2159B	Rectangles brute force data structures dp dsu greedy implementation two pointers	2100	3.4k
2157E	Adjusting Drones binary search brute force data structures dp dsu greedy implementation sortings	1900	4.6k
2156E	Best Time to Buy and Sell Stock binary search brute force data structures dp games graphs greedy	2500	1k
2156F1	Strange Operation (Easy Version) brute force data structures greedy implementation sortings	2200	1.7k
2153F	Odd Queries on Odd Array bitmasks brute force data structures implementation trees	2900	337
2149G	Buratsuta 3 binary search brute force data structures divide and conquer probabilities	2100	2.8k
2147E	Maximum OR Popcount binary search bitmasks brute force data structures greedy	2300	2.2k
2146E	Yet Another MEX Problem brute force constructive algorithms data structures divide and conquer greedy hashing	2300	2.2k
2133A	Redstone? brute force data structures implementation math	800	31.9k
2131G	Wafu! bitmasks brute force data structures dfs and similar dp math	2000	3.9k
2129B	Stay or Mirror brute force data structures dp greedy sortings	1600	15.1k
2126F	1-1-1, Free Tree! brute force data structures dfs and similar graphs implementation trees	2000	4.4k
2123C	Prefix Min and Suffix Max brute force data structures	1000	31.7k
2123G	Modular Sorting brute force data structures greedy math number theory sortings	2100	3.3k
2122D	Traffic Lights brute force data structures divide and conquer dp graphs greedy shortest paths	2400	2.8k
2121F	Yamakasi binary search brute force data structures greedy two pointers	1800	8.3k
2121H	Ice Baby binary search brute force data structures dp implementation sortings	2300	2.3k
2118D2	Red Light, Green Light (Hard version) binary search brute force data structures dfs and similar dp graphs implementation math number theory	2200	2.6k
2111G	Divisible Subarrays binary search bitmasks brute force data structures interactive	2900	422
2108C	Neo's Escape binary search brute force data structures dp dsu graphs greedy implementation	1500	15.1k
2107F2	Cycling (Hard Version) binary search brute force data structures dp greedy	2800	566
2104B	Move to the End brute force data structures dp greedy implementation	1000	21.3k
2101B	Quartet Swapping brute force data structures divide and conquer greedy sortings	1800	8.1k
2101C	23 Kingdom binary search brute force data structures greedy ternary search two pointers	2200	3.8k
2091G	Gleb and Boating brute force constructive algorithms data structures dp graphs greedy math number theory shortest paths	2300	1.6k
2077D	Maximum Polygon brute force data structures greedy implementation math	3100	393
2075F	Beautiful Sequence Returns binary search brute force data structures implementation	3000	529
2074D	Counting Points brute force data structures geometry implementation two pointers	1400	12.4k
2071D2	Infinite Sequence (Hard Version) bitmasks brute force constructive algorithms data structures dp implementation math	2500	1.1k
2064D	Eating binary search bitmasks brute force data structures dp greedy trees two pointers	1900	6k
2063C	Remove Exactly Two brute force data structures dfs and similar dp graphs greedy sortings trees	1600	15.1k
2063D	Game With Triangles binary search brute force data structures geometry greedy implementation math ternary search two pointers	2000	5.2k
2059E2	Stop Gaming (Hard Version) brute force constructive algorithms data structures hashing strings	2900	355
2056D	Unique Median binary search brute force combinatorics data structures divide and conquer dp	2200	3.7k
2055E	Haystacks brute force constructive algorithms data structures greedy sortings	2800	496
2053B	Outstanding Impressionist binary search brute force data structures greedy	1200	17.2k
2053F	Earnest Matrix Complement brute force data structures dp greedy implementation math	2600	963
2051E	Best Price binary search brute force data structures greedy sortings	1600	12.3k
2049F	MEX OR Mania bitmasks brute force data structures dsu implementation	2700	600
2048D	Kevin and Competition Memories binary search brute force data structures greedy sortings two pointers	1600	8.5k
2048F	Kevin and Math Class brute force data structures divide and conquer dp implementation math trees	2500	1.3k
2044F	Easy Demon Problem binary search brute force data structures math number theory	1900	6.4k
2043C	Sums on Segments binary search brute force data structures dp greedy math	1600	11.5k
2043E	Matrix Transformation bitmasks brute force data structures dfs and similar graphs greedy implementation	2300	1.9k
2043G	Problem with Queries brute force data structures implementation	3000	337
2042E	Vertex Pairs binary search brute force data structures dfs and similar divide and conquer greedy implementation trees	2900	535
2033E	Sakurako, Kosuke, and the Permutation brute force data structures dfs and similar dsu graphs greedy math	1400	14.5k
2027C	Add Zeros brute force data structures dfs and similar dp graphs greedy	1500	14.1k
2026C	Action Figures binary search brute force constructive algorithms data structures greedy implementation	1500	12.9k
2025D	Attribute Checks brute force data structures dp implementation math two pointers	1800	8k
2021E1	Digital Village (Easy Version) brute force data structures dfs and similar dp dsu fft graphs greedy implementation math trees	2300	2k
2014D	Robert Hood and Mrs Hood brute force data structures greedy sortings	1400	16.3k
2014G	Milky Days brute force data structures greedy implementation	2200	1.8k
2013F1	Game in Tree (Easy Version) binary search brute force data structures dp games greedy implementation trees	2700	679
2008E	Alternating String brute force data structures dp greedy implementation strings	1500	13.8k
2006B	Iris and the Tree brute force data structures dfs and similar dsu math trees	1800	4.4k
2006E	Iris's Full Binary Tree brute force data structures dfs and similar trees	3100	328
2005D	Alter the GCD binary search brute force data structures divide and conquer implementation number theory	2400	1.3k
2004D	Colored Portals binary search brute force data structures graphs greedy implementation shortest paths	1600	13.5k
2004F	Make a Palindrome binary search brute force data structures greedy math	2600	1.4k
2003E2	Turtle and Inversions (Hard Version) brute force data structures divide and conquer dp greedy math two pointers	2700	654
2003F	Turtle and Three Sequences brute force data structures dp greedy math probabilities two pointers	2800	838
2002D1	DFS Checker (Easy Version) brute force data structures dfs and similar graphs hashing trees	1900	5.2k
2002E	Cosmic Rays brute force data structures dp	2300	3k
2001D	Longest Max Min Subsequence brute force constructive algorithms data structures greedy implementation	1900	6.6k
2000H	Ksyusha and the Loaded Set binary search brute force data structures implementation	2200	2.4k
1998E1	Eliminating Balls With Merging (Easy Version) binary search brute force data structures divide and conquer greedy	2200	2.3k
1998E2	Eliminating Balls With Merging (Hard Version) binary search brute force data structures divide and conquer greedy implementation	2500	927
1997E	Level Up binary search brute force data structures divide and conquer implementation	2200	3.9k
1996G	Penacony brute force data structures graphs greedy hashing	2200	2.4k
1990F	Polygonal Segments brute force data structures divide and conquer dp greedy two pointers	2800	464
1989D	Smithing Skill brute force data structures dp greedy math sortings two pointers	1900	7.2k
1988E	Range Minimum Sum binary search brute force data structures divide and conquer implementation	2300	1.9k
1987E	Wonderful Tree! brute force data structures dfs and similar dsu greedy trees	2000	4.2k
1986B	Matrix Stabilization brute force data structures greedy sortings	1000	30.4k
1986G1	Permutation Problem (Simple Version) binary search brute force combinatorics data structures math number theory	2200	2k
1986G2	Permutation Problem (Hard Version) brute force data structures hashing math number theory	2500	1.5k
1985H1	Maximize the Largest Component (Easy Version) brute force data structures dfs and similar dsu graphs implementation	1700	7.4k
1982D	Beauty of the mountains brute force data structures implementation math number theory	1700	10.2k
1978E	Computing Machine brute force data structures dp greedy implementation	2000	4.7k
1977C	Nikita and LCM brute force data structures dp greedy math number theory sortings	1900	8.2k
1974F	Cutting Game binary search brute force data structures implementation sortings two pointers	1900	4.5k
1968G2	Division + LCP (hard version) binary search brute force data structures dp hashing math string suffix structures strings	2200	2.6k
1967C	Fenwick Tree bitmasks brute force combinatorics data structures dp math trees	2300	2.3k
1967F	Next and Prev brute force data structures implementation	3200	104
1956A	Nene's Game binary search brute force data structures games greedy	800	24.5k

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