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

Problemset

220 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
2246D	diss_quack and Array Game bitmasks brute force games greedy	unrated	2.8k
2242E	Product of Closures bitmasks brute force constructive algorithms greedy implementation math number theory	2200	1.4k
2236G	Criterion in Burlandia binary search bitmasks brute force data structures dfs and similar divide and conquer implementation trees two pointers	2600	385
2225D	Exceptional Segments bitmasks brute force math	1500	8.3k
2218E	The 67th XOR Problem binary search bitmasks brute force	1200	17.1k
2215C	Oriented Journey bitmasks brute force communication constructive algorithms graphs interactive trees	2200	819
2215D	EXPloration, EXPloitation, and Gain Some EXPerience! bitmasks brute force dp greedy implementation	2800	162
2205G	Simons and Diophantus Equation bitmasks brute force data structures math number theory	3000	231
2200B	Deletion Sort bitmasks brute force greedy sortings	800	27.9k
2196E1	Fuzzy Concatenation (Easy Version) binary search bitmasks brute force data structures greedy string suffix structures	2900	311
2194C	Secret message bitmasks brute force dp math number theory	1300	11.6k
2182F1	Christmas Reindeer (easy version) bitmasks brute force combinatorics dp math	2300	1.3k
2182F2	Christmas Reindeer (hard version) bitmasks brute force combinatorics data structures greedy math	2500	1.1k
2173D	Taiga's Carry Chains bitmasks brute force dp greedy math	1900	3.8k
2170A	Maximum Neighborhood bitmasks brute force greedy implementation math	800	20.6k
2157G	Isaac's Queries bitmasks brute force constructive algorithms dfs and similar divide and conquer dp greedy interactive math probabilities	2800	672
2153F	Odd Queries on Odd Array bitmasks brute force data structures implementation trees	2900	337
2147E	Maximum OR Popcount binary search bitmasks brute force data structures greedy	2300	2.2k
2138C2	Maple and Tree Beauty (Hard Version) bitmasks brute force dfs and similar dp fft trees	2000	3.6k
2131G	Wafu! bitmasks brute force data structures dfs and similar dp math	2000	3.9k
2111G	Divisible Subarrays binary search bitmasks brute force data structures interactive	2900	422
2093F	Hackers and Neural Networks bitmasks brute force greedy	1800	6k
2086E	Zebra-like Numbers bitmasks brute force constructive algorithms dfs and similar dp greedy math	2400	1.7k
2075D	Equalization bitmasks brute force dp graphs math	2000	6k
2074C	XOR and Triangle bitmasks brute force geometry greedy probabilities	1100	22.4k
2071D1	Infinite Sequence (Easy Version) bitmasks brute force dp implementation math	1800	6.9k
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
2061E	Kevin and And bitmasks brute force dp greedy math sortings	2000	4.1k
2056F1	Xor of Median (Easy Version) bitmasks brute force combinatorics dp math	2700	455
2056F2	Xor of Median (Hard Version) bitmasks brute force combinatorics dp math	3000	362
2049E	Broken Queries binary search bitmasks brute force constructive algorithms implementation interactive	2400	1.6k
2049F	MEX OR Mania bitmasks brute force data structures dsu implementation	2700	600
2048C	Kevin and Binary Strings bitmasks brute force greedy implementation strings	1200	15.4k
2043E	Matrix Transformation bitmasks brute force data structures dfs and similar graphs greedy implementation	2300	1.9k
2043F	Nim bitmasks brute force combinatorics dp games greedy implementation shortest paths	2700	918
2039C1	Shohag Loves XOR (Easy Version) bitmasks brute force math number theory	1200	13.8k
2039C2	Shohag Loves XOR (Hard Version) bitmasks brute force math number theory	1800	5.1k
2029H	Message Spread bitmasks brute force combinatorics dp	3500	111
2028F	Alice's Adventures in Addition bitmasks brute force dp implementation	2700	556
2027E1	Bit Game (Easy Version) bitmasks brute force games math	2800	270
2020A	Find Minimum Operations bitmasks brute force greedy math number theory	800	26.2k
2002G	Lattice Optimizing bitmasks brute force hashing meet-in-the-middle	3400	292
1995D	Cases bitmasks brute force dp strings	2300	3k
1994G	Minecraft bitmasks brute force dp graphs math	2600	1.7k
1990D	Grid Puzzle bitmasks brute force dp greedy implementation	1800	7.9k
1983G	Your Loss bitmasks brute force dp trees	3000	325
1982E	Number of k-good subarrays bitmasks brute force combinatorics divide and conquer dp math meet-in-the-middle	2300	1.9k
1981C	Turtle and an Incomplete Sequence bitmasks brute force constructive algorithms greedy implementation math	1800	6.4k
1979D	Fixing a Binary String bitmasks brute force constructive algorithms dp greedy hashing strings	1800	8k
1977D	XORificator bitmasks brute force greedy hashing	2300	2.4k
1975F	Set bitmasks brute force combinatorics dfs and similar divide and conquer dp math	2600	1.1k
1973F	Maximum GCD Sum Queries bitmasks brute force dp implementation number theory	3100	345
1967C	Fenwick Tree bitmasks brute force combinatorics data structures dp math trees	2300	2.3k
1957D	A BIT of an Inequality bitmasks brute force dp math	1900	6k
1956D	Nene and the Mex Operator bitmasks brute force constructive algorithms divide and conquer dp greedy implementation math	2000	4.9k
1955H	The Most Reckless Defense bitmasks brute force constructive algorithms dp flows graph matchings shortest paths	2300	1.6k
1950F	0, 1, 2, Tree! bitmasks brute force greedy implementation trees	1700	11.5k
1948G	MST with Matching bitmasks brute force dsu graph matchings trees	3100	976
1946D	Birthday Gift bitmasks brute force constructive algorithms greedy implementation	1900	5.7k
1935E	Distance Learning Courses in MAC bitmasks brute force data structures greedy math	2400	1.7k
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks brute force combinatorics constructive algorithms dfs and similar math	2300	1.2k
1930F	Maximize the Difference bitmasks brute force dfs and similar	2700	979
1929E	Sasha and the Happy Tree Cutting bitmasks brute force dfs and similar dp graphs greedy math trees	2300	2.1k
1926F	Vlad and Avoiding X bitmasks brute force dfs and similar dp implementation	2200	2.1k
1915B	Not Quite Latin Square bitmasks brute force implementation	800	51.3k
1913C	Game with Multiset binary search bitmasks brute force greedy	1300	17.8k
1909E	Multiple Lamps bitmasks brute force constructive algorithms math number theory	2400	1.7k
1903B	StORage room bitmasks brute force constructive algorithms greedy	1200	15k
1903D1	Maximum And Queries (easy version) binary search bitmasks brute force greedy	1700	7.4k
1900D	Small GCD bitmasks brute force dp math number theory	2000	5.6k
1882B	Sets and Union bitmasks brute force constructive algorithms greedy	1300	17.6k
1878G	wxhtzdy ORO Tree binary search bitmasks brute force data structures dfs and similar implementation trees	2300	1.5k
1874B	Jellyfish and Math bitmasks brute force dfs and similar dp graphs shortest paths	2400	1.4k
1870E	Another MEX Problem bitmasks brute force dp shortest paths	2300	3.1k
1862F	Magic Will Save the World binary search bitmasks brute force dp	1800	7.8k
1854B	Earn or Unlock bitmasks brute force dp	2200	4.4k
1847C	Vampiric Powers, anyone? bitmasks brute force dp greedy	1400	15k
1835C	Twin Clusters bitmasks brute force constructive algorithms math probabilities	2600	1.2k
1826E	Walk the Runway bitmasks brute force data structures dp graphs implementation sortings	2400	2k
1805A	We Need the Zero bitmasks brute force	800	45.3k
1804E	Routing bitmasks brute force dfs and similar dp graphs	2400	1.7k
1789D	Serval and Shift-Shift-Shift bitmasks brute force constructive algorithms implementation	2200	2k
1789F	Serval and Brain Power bitmasks brute force dp greedy implementation strings	2700	1k
1780F	Three Chairs bitmasks brute force combinatorics data structures dp number theory sortings	2300	2k
1778C	Flexible String bitmasks brute force strings	1600	11.6k
1767E	Algebra Flash bitmasks brute force dp graphs math meet-in-the-middle trees	2500	1.3k
1742G	Orray bitmasks brute force greedy math sortings	1500	13.7k
1741G	Kirill and Company bitmasks brute force dfs and similar dp flows graphs shortest paths	2200	2k
1732C2	Sheikh (Hard Version) binary search bitmasks brute force greedy implementation two pointers	2100	3.2k
1731C	Even Subarrays bitmasks brute force hashing math number theory	1700	12.5k
1728G	Illumination binary search bitmasks brute force combinatorics dp math two pointers	2700	669
1720D1	Xor-Subsequence (easy version) bitmasks brute force dp strings trees two pointers	1800	6.8k
1710C	XOR Triangle bitmasks brute force constructive algorithms dp greedy math	2500	1.7k
1709F	Multiset of Strings bitmasks brute force dp fft flows graphs math meet-in-the-middle trees	2500	729
1705E	Mark and Professor Koro binary search bitmasks brute force combinatorics data structures greedy	2300	2.5k
1703G	Good Key, Bad Key bitmasks brute force dp greedy math	1600	13k
1698A	XOR Mixup bitmasks brute force	800	33.3k
1689E	ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs	2500	1.4k
1688A	Cirno's Perfect Bitmasks Classroom bitmasks brute force	800	23.7k

showing 1–100 of 220