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Refact.ai Match 1 (Codeforces Round 985)
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bitmasks

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Problems

#	Name
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2182
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x431
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12008
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19583
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x795
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x926
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1538
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7222
1463F	Max Correct Set bitmasks, dp, math	3100	x594
1450G	Communism bitmasks, dp, trees	3500	x315
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3656
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x714
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x790
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4456
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x973
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14184
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x499
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5313
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19407
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x578
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5078
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12474
1342F	Make It Ascending bitmasks, brute force, dp	3000	x724
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7866
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x427
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1688
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x486
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x844
1322D	Reality Show bitmasks, dp	2800	x752
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x4120
1313D	Happy New Year bitmasks, dp, implementation	2500	x1348
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x1013
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x446
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x317
1288D	Minimax Problem binary search, bitmasks, dp	2000	x7248
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7783
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x2008
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1677
1238E	Keyboard Purchase bitmasks, dp	2200	x3054
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2604
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x559
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x753
1215E	Marbles bitmasks, dp	2200	x3054
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1979
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2979
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2515
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2884
1168C	And Reachability bitmasks, dp	2200	x2425
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x650
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x568
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x11257
1117F	Crisp String bitmasks, dp	2500	x583
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1650
1103D	Professional layer bitmasks, dp	3100	x409
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x2020
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x94
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x29061
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2643
1051D	Bicolorings bitmasks, dp	1700	x7429
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2394
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x16189
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x987
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x640
1030E	Vasya and Good Sequences bitmasks, dp	2000	x3102
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x5396
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2109
981D	Bookshelves bitmasks, dp, greedy	1900	x3251
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1837
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x2129
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3439
938F	Erasing Substrings bitmasks, dp, greedy	2700	x505
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x931
913E	Logical Expression bitmasks, dp, shortest paths	2400	x807
913C	Party Lemonade bitmasks, dp, greedy	1600	x7941
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x759
906C	Party bitmasks, brute force, dp, graphs	2400	x1363
903F	Clear The Matrix bitmasks, dp	2200	x655
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3260
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5604
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x923
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4628
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x138
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1793
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1506
845F	Guards In The Storehouse bitmasks, dp	2500	x455
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5205
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1052
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x339
772D	Varying Kibibits bitmasks, dp	2700	x599
768E	Game of Stones bitmasks, dp, games	2100	x2984
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x3025
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1404
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1424
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x449
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1155
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1505
698C	LRU bitmasks, dp, math, probabilities	2400	x1321
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x2211
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x2024
599E	Sandy and Nuts bitmasks, dp, trees	2600	x668