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Problemset

709 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
2077B	Finding OR Sum bitmasks constructive algorithms implementation interactive math	1900	3.7k
2077F	AND x OR bitmasks constructive algorithms dp	3300	271
2077G	RGB Walking bitmasks chinese remainder theorem dfs and similar graphs number theory	3500	142
2075D	Equalization bitmasks brute force dp graphs math	2000	6k
2075E	XOR Matrix bitmasks combinatorics dp implementation math	2500	1.2k
2074C	XOR and Triangle bitmasks brute force geometry greedy probabilities	1100	22.4k
2074F	Counting Necessary Nodes bitmasks divide and conquer greedy implementation math	2000	2.5k
2072C	Creating Keys for StORages Has Become My Main Skill bitmasks constructive algorithms greedy	1200	20k
2072F	Goodbye, Banker Life 2-sat bitmasks combinatorics constructive algorithms fft math number theory	1700	8.7k
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
2070F	Friends and Pizza bitmasks divide and conquer dp fft	3000	379
2066C	Bitwise Slides bitmasks combinatorics dp math	2300	2.6k
2064D	Eating binary search bitmasks brute force data structures dp greedy trees two pointers	1900	6k
2062H	Galaxy Generator bitmasks combinatorics dp	3500	189
2061D	Kevin and Numbers bitmasks data structures	1600	11.1k
2061E	Kevin and And bitmasks brute force dp greedy math sortings	2000	4.1k
2057C	Trip to the Olympiad bitmasks constructive algorithms greedy math	1500	14.1k
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
2053C	Bewitching Stargazer bitmasks divide and conquer dp math	1500	12.6k
2051G	Snakes bitmasks dp dsu graphs	2100	2.5k
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	601
2048C	Kevin and Binary Strings bitmasks brute force greedy implementation strings	1200	15.4k
2048I2	Kevin and Puzzle (Hard Version) bitmasks fft math	3500	68
2045J	Xorderable Array bitmasks data structures	2600	350
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
2041C	Cube bitmasks dfs and similar dp	2000	2.1k
2040C	Ordered Permutations bitmasks combinatorics constructive algorithms greedy math two pointers	1600	11k
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
2038D	Divide OR Conquer binary search bitmasks data structures dp implementation	2400	888
2037G	Natlan Exploring bitmasks combinatorics data structures dp math number theory	2000	3.9k
2036F	XORificator 3000 bitmasks dp number theory two pointers	1900	5.5k
2035C	Alya and Permutation bitmasks constructive algorithms math	1400	11.8k
2029H	Message Spread bitmasks brute force combinatorics dp	3500	111
2028F	Alice's Adventures in Addition bitmasks brute force dp implementation	2700	557
2027E1	Bit Game (Easy Version) bitmasks brute force games math	2800	270
2027E2	Bit Game (Hard Version) bitmasks dp math	3100	111
2026E	Best Subsequence bitmasks dfs and similar flows graph matchings graphs	2500	2.1k
2020A	Find Minimum Operations bitmasks brute force greedy math number theory	800	26.3k
2020C	Bitwise Balancing bitmasks hashing implementation math schedules ternary search	1400	18.7k
2020E	Expected Power bitmasks dp math probabilities	2000	4.1k
2009F	Firefly's Queries bitmasks data structures flows math	1700	8.7k
2002G	Lattice Optimizing bitmasks brute force hashing meet-in-the-middle	3400	292
1995D	Cases bitmasks brute force dp strings	2300	3k
1994B	Fun Game bitmasks constructive algorithms greedy math	1100	19.8k
1994E	Wooden Game bitmasks greedy math trees	2000	5.7k
1994G	Minecraft bitmasks brute force dp graphs math	2600	1.7k
1993E	Xor-Grid Problem bitmasks constructive algorithms dp implementation	2700	741
1991B	AND Reconstruction bitmasks constructive algorithms greedy	1100	19.2k
1991D	Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory	1900	8k
1991H	Prime Split Game bitmasks dp fft games math number theory	3300	580
1990D	Grid Puzzle bitmasks brute force dp greedy implementation	1800	7.9k
1988C	Increasing Sequence with Fixed OR bitmasks constructive algorithms greedy	1300	20.6k
1983F	array-value binary search bitmasks data structures greedy two pointers	2500	1.6k
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
1981B	Turtle and an Infinite Sequence bitmasks math	1300	16.7k
1981C	Turtle and an Incomplete Sequence bitmasks brute force constructive algorithms greedy implementation math	1800	6.4k
1980G	Yasya and the Mysterious Tree bitmasks data structures dfs and similar graphs greedy strings trees	2300	1.8k
1979B	XOR Sequences bitmasks greedy	1000	26.8k
1979D	Fixing a Binary String bitmasks brute force constructive algorithms dp greedy hashing strings	1800	8k
1977B	Binary Colouring bitmasks constructive algorithms greedy math	1100	20.1k
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
1973B	Cat, Fox and the Lonely Array binary search bitmasks data structures greedy math two pointers	1300	17.1k
1973F	Maximum GCD Sum Queries bitmasks brute force dp implementation number theory	3100	345
1970G3	Min-Fund Prison (Hard) bitmasks dfs and similar dp graphs trees	2400	575
1967C	Fenwick Tree bitmasks brute force combinatorics data structures dp math trees	2300	2.3k
1965B	Missing Subsequence Sum bitmasks constructive algorithms greedy number theory	1800	8.3k
1957B	A BIT of a Construction bitmasks constructive algorithms greedy implementation	1100	20.7k
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
1952I	Dark Matter *special bitmasks geometry	unrated	653
1950F	0, 1, 2, Tree! bitmasks brute force greedy implementation trees	1700	11.5k
1950G	Shuffling Songs bitmasks dfs and similar dp graphs hashing implementation strings	1900	6.3k
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
1944B	Equal XOR bitmasks constructive algorithms	1100	18.4k
1936A	Bitwise Operation Wizard bitmasks constructive algorithms greedy interactive math	1700	8.8k
1936D	Bitwise Paradox binary search bitmasks data structures greedy two pointers	3100	705
1935E	Distance Learning Courses in MAC bitmasks brute force data structures greedy math	2400	1.7k
1934D1	XOR Break --- Solo Version bitmasks constructive algorithms greedy	2100	4.2k
1934D2	XOR Break --- Game Version bitmasks games greedy interactive	2400	1.8k
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks brute force combinatorics constructive algorithms dfs and similar math	2300	1.2k
1930D2	Sum over all Substrings (Hard Version) bitmasks divide and conquer dp dsu greedy implementation strings	2100	3.1k
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
1926D	Vlad and Division bitmasks greedy	1300	18.7k
1926E	Vlad and an Odd Ordering binary search bitmasks data structures dp implementation math number theory	1500	15.2k
1926F	Vlad and Avoiding X bitmasks brute force dfs and similar dp implementation	2200	2.1k
1922E	Increasing Subsequences bitmasks constructive algorithms divide and conquer greedy math	1800	9.3k
1918C	XOR-distance bitmasks greedy implementation math	1400	17.1k
1917F	Construct Tree bitmasks constructive algorithms dp trees	2500	1.3k
1915A	Odd One Out bitmasks implementation	800	82.1k
1915B	Not Quite Latin Square bitmasks brute force implementation	800	51.3k

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