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bitmasks

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Problems

#	Name
2037G	Natlan Exploring bitmasks, combinatorics, data structures, dp, math, number theory	2000	x1804
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers	1900	x3253
2035C	Alya and Permutation bitmasks, constructive algorithms, math	1400	x7908
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x2983
2020C	Bitwise Balancing bitmasks, hashing, implementation, math, schedules, ternary search	1400	x14376
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x21813
2009F	Firefly's Queries bitmasks, data structures, flows, math	1700	x6509
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x4517
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16559
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6676
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x16392
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x6323
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x16616
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5369
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13769
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6662
1979B	XOR Sequences bitmasks, greedy	1000	x22655
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17689
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14162
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6770
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4543
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x18016
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3953
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4426
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9235
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4770
1944B	Equal XOR bitmasks, constructive algorithms	1100	x16294
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7526
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12090
1926D	Vlad and Division bitmasks, greedy	1300	x15731
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7810
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14208
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x42860
1915A	Odd One Out bitmasks, implementation	800	x58540
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15208
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2567
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17462
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5826
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12956
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4323
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6139
1883E	Look Back bitmasks, greedy	1700	x8239
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5594
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15611
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7569
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x13181
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11906
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13993
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14314
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7095
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16874
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13646
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6371
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5957
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x13012
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x20172
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4476
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x33689
1842B	Tenzing and Books bitmasks, greedy, math	1100	x17411
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22607
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7904
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x28899
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x19723
1805A	We Need the Zero bitmasks, brute force	800	x24265
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8672
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3966
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x6332
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x15334
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x5009
1778C	Flexible String bitmasks, brute force, strings	1600	x8360
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3556
1775C	Interesting Sequence bitmasks, math	1600	x10652
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x14153
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15768
1760G	SlavicG's Favorite Problem bitmasks, dfs and similar, graphs	1700	x7453
1747D	Yet Another Problem binary search, bitmasks, constructive algorithms, data structures	1900	x4720
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x10919
1732C1	Sheikh (Easy version) binary search, bitmasks, greedy, two pointers	1800	x5990
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x9712
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x15231
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x11493
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6710
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x6057
1715D	2+ doors 2-sat, bitmasks, graphs, greedy	1900	x5200
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10837
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19892
1698A	XOR Mixup bitmasks, brute force	800	x29415
1696A	NIT orz! bitmasks, greedy	800	x18879
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18336
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x21783
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x18902
1680E	Moving Chips bitmasks, dp, greedy	2000	x3825
1669H	Maximal AND bitmasks, greedy, math	1300	x19089
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x4026
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17981
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x11004
1658D1	388535 (Easy Version) bitmasks, math	1600	x9164
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14338
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6306
1635A	Min Or Sum bitmasks, greedy	800	x23060

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