Problemset - Codeforces

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bitmasks

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Problems

#	Name
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x659
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x532
1117F	Crisp String bitmasks, dp	2500	x517
152E	Garden bitmasks, dp, graphs, trees	2500	x459
845F	Guards In The Storehouse bitmasks, dp	2500	x419
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2097
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1940
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1269
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1031
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1026
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x994
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x937
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x892
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x892
482C	Game with Strings bitmasks, dp, probabilities	2600	x870
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x864
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x846
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x811
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x784
1398G	Running Competition bitmasks, fft, math, number theory	2600	x764
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x763
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x752
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x695
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x624
599E	Sandy and Nuts bitmasks, dp, trees	2600	x616
1739F	Keyboard Design bitmasks, data structures, dp, string suffix structures, strings	2600	x512
1679F	Formalism for Formalism bitmasks, dp, math	2600	x495
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x479
375C	Circling Round Treasures bitmasks, shortest paths	2600	x473
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x454
201D	Brand New Problem bitmasks, brute force, dp	2600	x388
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x374
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x294
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x284
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1304
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1113
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1043
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x967
356D	Bags and Coins bitmasks, constructive algorithms, dp, greedy	2700	x936
241B	Friends binary search, bitmasks, data structures, math	2700	x751
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x699
1849F	XOR Partition binary search, bitmasks, data structures, divide and conquer, greedy, trees	2700	x650
1795G	Removal Sequences bitmasks, dfs and similar, graphs	2700	x648
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x647
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x606
1411G	No Game No Life bitmasks, games, math, matrices	2700	x578
772D	Varying Kibibits bitmasks, dp	2700	x566
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x515
938F	Erasing Substrings bitmasks, dp, greedy	2700	x467
251D	Two Sets bitmasks, math	2700	x441
1728G	Illumination binary search, bitmasks, brute force, combinatorics, dp, math, two pointers	2700	x415
1730F	Almost Sorted bitmasks, data structures, dp	2700	x410
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x393
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x361
504D	Misha and XOR bitmasks	2700	x298
76C	Mutation bitmasks, dp, math	2700	x267
1016G	Appropriate Team bitmasks, math, number theory	2700	x256
97D	Robot in Basement bitmasks, brute force, implementation	2700	x229
575C	Party bitmasks, brute force, graph matchings	2700	x211
336E	Vasily the Bear and Painting Square bitmasks, combinatorics, dp, implementation	2700	x109
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1051
79D	Password bitmasks, dp, shortest paths	2800	x943
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x916
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2800	x715
1322D	Reality Show bitmasks, dp	2800	x695
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x512
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x502
83E	Two Subsequences bitmasks, dp	2800	x452
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x429
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x401
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x392
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x379
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x319
796F	Sequence Recovery bitmasks, data structures, greedy	2800	x169
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x960
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x858
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x673
878D	Magic Breeding bitmasks	2900	x640
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x573
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x519
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x507
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x442
1334G	Substring Search bitmasks, brute force, fft	2900	x353
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x329
1698G	Long Binary String bitmasks, math, matrices, meet-in-the-middle, number theory	2900	x300
217D	Bitonix' Patrol bitmasks, brute force, combinatorics, dfs and similar, math	2900	x245
1725D	Deducing Sortability binary search, bitmasks, math	2900	x117
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1420
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x786
1342F	Make It Ascending bitmasks, brute force, dp	3000	x684
232E	Quick Tortoise bitmasks, divide and conquer, dp	3000	x672
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x638
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x591
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x558
582E	Boolean Function bitmasks, dp, expression parsing	3000	x475
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x449
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x416
1748F	Circular Xor Reversal bitmasks, constructive algorithms	3000	x323
1743G	Antifibonacci Cut bitmasks, combinatorics, constructive algorithms, data structures, dp, hashing, math	3000	x244