Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
44:28:20
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bitmasks

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Problems

#	Name
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x631
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x738
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4199
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x906
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13568
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	x4945
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18443
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x561
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4779
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11899
1342F	Make It Ascending bitmasks, brute force, dp	3000	x689
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7626
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x407
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1610
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x471
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x819
1322D	Reality Show bitmasks, dp	2800	x699
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3514
1313D	Happy New Year bitmasks, dp, implementation	2500	x1167
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x951
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x420
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x306
1288D	Minimax Problem binary search, bitmasks, dp	2000	x6719
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7362
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1735
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1474
1238E	Keyboard Purchase bitmasks, dp	2200	x2747
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2376
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x526
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x520
1215E	Marbles bitmasks, dp	2200	x2925
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1856
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2858
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2121
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2624
1168C	And Reachability bitmasks, dp	2200	x2341
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x601
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x522
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10736
1117F	Crisp String bitmasks, dp	2500	x517
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1598
1103D	Professional layer bitmasks, dp	3100	x400
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1919
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x93
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26854
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2414
1051D	Bicolorings bitmasks, dp	1700	x7163
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2196
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15326
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x957
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x602
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2976
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4727
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2004
981D	Bookshelves bitmasks, dp, greedy	1900	x3179
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1694
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1946
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3324
938F	Erasing Substrings bitmasks, dp, greedy	2700	x470
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x898
913E	Logical Expression bitmasks, dp, shortest paths	2400	x744
913C	Party Lemonade bitmasks, dp, greedy	1600	x7751
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x735
906C	Party bitmasks, brute force, dp, graphs	2400	x1183
903F	Clear The Matrix bitmasks, dp	2200	x624
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3011
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5157
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x893
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4536
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x119
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1633
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1378
845F	Guards In The Storehouse bitmasks, dp	2500	x421
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5086
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1022
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x330
772D	Varying Kibibits bitmasks, dp	2700	x572
768E	Game of Stones bitmasks, dp, games	2100	x2654
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2858
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1275
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1282
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x441
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1013
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1478
698C	LRU bitmasks, dp, math, probabilities	2400	x1283
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1913
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1963
599E	Sandy and Nuts bitmasks, dp, trees	2600	x623
582E	Boolean Function bitmasks, dp, expression parsing	3000	x478
580D	Kefa and Dishes bitmasks, dp	1800	x9236
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2730
543C	Remembering Strings bitmasks, dp	2500	x1361
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x444
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2770
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5203
482C	Game with Strings bitmasks, dp, probabilities	2600	x873
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29237
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4539
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4105