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bitmasks

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Problems

#	Name
1915A	Odd One Out bitmasks, implementation	800	x50235
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x38812
1527A	And Then There Were K bitmasks	800	x34048
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31216
1698A	XOR Mixup bitmasks, brute force	800	x27940
1421A	XORwice bitmasks, greedy, math	800	x27361
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27229
1635A	Min Or Sum bitmasks, greedy	800	x22139
1805A	We Need the Zero bitmasks, brute force	800	x21216
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x20871
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19127
1696A	NIT orz! bitmasks, greedy	800	x18360
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x17880
1625A	Ancient Civilization bitmasks, greedy, math	800	x16967
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x15917
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15307
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x28732
1494A	ABC String bitmasks, brute force, implementation	900	x20439
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19211
579A	Raising Bacteria bitmasks	1000	x56626
1567B	MEXor Mixup bitmasks, greedy	1000	x21592
1632B	Roof Construction bitmasks, constructive algorithms	1000	x20953
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19157
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17049
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x36088
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21693
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21572
1594B	Special Numbers bitmasks, math	1100	x18968
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x17788
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17305
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15903
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15749
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x15273
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x14685
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14417
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9001
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26756
1420B	Rock and Lever bitmasks, math	1200	x23809
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22935
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18406
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17349
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15253
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14258
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x14069
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13389
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11478
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29139
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17038
1669H	Maximal AND bitmasks, greedy, math	1300	x16518
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16173
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16092
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15258
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x14506
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14352
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13766
1926D	Vlad and Division bitmasks, greedy	1300	x13737
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13322
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12657
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12636
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11408
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10646
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9799
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8816
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5158
550B	Preparing Olympiad bitmasks, brute force	1400	x19581
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x18804
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x17092
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15913
1095C	Powers Of Two bitmasks, greedy	1400	x15842
1634B	Fortune Telling bitmasks, math	1400	x15727
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14244
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13966
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13819
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13615
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12649
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12262
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11206
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10844
961C	Chessboard bitmasks, brute force, implementation	1400	x5232
1600J	Robot Factory bitmasks, dfs and similar	1400	x3786
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18403
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18156
1630A	And Matching bitmasks, constructive algorithms	1500	x14105
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13251
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12123
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10443
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10171
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9934
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x9929
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9184
224B	Array bitmasks, implementation, two pointers	1500	x7165
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6290
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4530
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3540
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13543
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12275
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11863
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10706
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10068
1775C	Interesting Sequence bitmasks, math	1600	x9714

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