Problemset - Codeforces

→ Pay attention

Contest is running
2023 Post World Finals Online ICPC Challenge powered by Huawei
13 days
Register now »

Before contest
Kotlin Heroes: Practice 10
01:42:50
Register now »

→ Filter Problems

Difficulty: —

bitmasks

Add tag

Problems

#	Name
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4177
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x899
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13501
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x442
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4926
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18327
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x560
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4761
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11854
1342F	Make It Ascending bitmasks, brute force, dp	3000	x686
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7569
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x403
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1604
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x463
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x812
1322D	Reality Show bitmasks, dp	2800	x698
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3471
1313D	Happy New Year bitmasks, dp, implementation	2500	x1155
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x941
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x417
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x302
1288D	Minimax Problem binary search, bitmasks, dp	2000	x6682
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7337
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1718
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1468
1238E	Keyboard Purchase bitmasks, dp	2200	x2739
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2364
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x521
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x519
1215E	Marbles bitmasks, dp	2200	x2915
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1847
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2715
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2102
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2558
1168C	And Reachability bitmasks, dp	2200	x2324
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x593
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x514
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10682
1117F	Crisp String bitmasks, dp	2500	x517
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1589
1103D	Professional layer bitmasks, dp	3100	x399
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1904
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x93
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26578
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2384
1051D	Bicolorings bitmasks, dp	1700	x7129
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2187
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15188
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x952
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x587
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2967
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4662
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x1995
981D	Bookshelves bitmasks, dp, greedy	1900	x3165
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1684
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1939
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3304
938F	Erasing Substrings bitmasks, dp, greedy	2700	x468
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x893
913E	Logical Expression bitmasks, dp, shortest paths	2400	x743
913C	Party Lemonade bitmasks, dp, greedy	1600	x7742
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x733
906C	Party bitmasks, brute force, dp, graphs	2400	x1180
903F	Clear The Matrix bitmasks, dp	2200	x624
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x2977
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5121
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x890
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4522
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x119
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1614
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1371
845F	Guards In The Storehouse bitmasks, dp	2500	x420
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5070
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1019
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x329
772D	Varying Kibibits bitmasks, dp	2700	x566
768E	Game of Stones bitmasks, dp, games	2100	x2638
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2821
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1274
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1270
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x440
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1010
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1470
698C	LRU bitmasks, dp, math, probabilities	2400	x1276
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1901
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1940
599E	Sandy and Nuts bitmasks, dp, trees	2600	x616
582E	Boolean Function bitmasks, dp, expression parsing	3000	x475
580D	Kefa and Dishes bitmasks, dp	1800	x9168
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2703
543C	Remembering Strings bitmasks, dp	2500	x1351
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x442
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2748
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5180
482C	Game with Strings bitmasks, dp, probabilities	2600	x872
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29035
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4520
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4083
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x673
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2104