Problemset - Codeforces

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Educational Codeforces Round 165 (Rated for Div. 2)
44:15:52
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bitmasks

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Problems

#	Name
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5107
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x3875
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x6581
878D	Magic Breeding bitmasks	2900	x640
878A	Short Program bitmasks, constructive algorithms	1600	x5263
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4232
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1970
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x890
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4520
865F	Egg Roulette bitmasks, brute force, divide and conquer, math, meet-in-the-middle	3300	x67
865E	Hex Dyslexia bitmasks, brute force, dp, graphs	3300	x118
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1608
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x378
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1370
845F	Guards In The Storehouse bitmasks, dp	2500	x416
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2683
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5068
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x2983
796F	Sequence Recovery bitmasks, data structures, greedy	2800	x169
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2897
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1018
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x2253
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x328
772D	Varying Kibibits bitmasks, dp	2700	x565
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2208
768E	Game of Stones bitmasks, dp, games	2100	x2630
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2803
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1271
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1268
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x479
750G	New Year and Binary Tree Paths bitmasks, brute force, combinatorics, dp	3200	x439
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1002
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1706
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1469
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14203
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1277
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x992
718E	Matvey's Birthday bitmasks, graphs	3300	x332
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x2592
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9239
698C	LRU bitmasks, dp, math, probabilities	2400	x1274
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x502
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1896
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6271
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1939
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2800	x712
620E	New Year Tree bitmasks, data structures, trees	2100	x5167
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9760
599E	Sandy and Nuts bitmasks, dp, trees	2600	x616
582E	Boolean Function bitmasks, dp, expression parsing	3000	x475
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x3411
580D	Kefa and Dishes bitmasks, dp	1800	x9132
579A	Raising Bacteria bitmasks	1000	x55868
575C	Party bitmasks, brute force, graph matchings	2700	x211
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2200	x6623
566E	Restoring Map bitmasks, constructive algorithms, trees	3200	x600
550B	Preparing Olympiad bitmasks, brute force	1400	x19399
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2701
543C	Remembering Strings bitmasks, dp	2500	x1350
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21560
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x438
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2045
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2722
513C	Second price auction bitmasks, probabilities	2000	x1516
513B2	Permutations bitmasks, divide and conquer, math	1800	x2561
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5169
504D	Misha and XOR bitmasks	2700	x297
484A	Bits bitmasks, constructive algorithms	1700	x10659
482C	Game with Strings bitmasks, dp, probabilities	2600	x870
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x28958
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x392
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x35690
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4517
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3214
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4061
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x2093
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x670
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9137
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2103
429C	Guess the Tree bitmasks, constructive algorithms, dp, greedy, trees	2300	x900
425B	Sereja and Table bitmasks, greedy	2200	x1280
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x2372
413D	2048 bitmasks, dp	2000	x749
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x3965
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x932
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2431
385D	Bear and Floodlight bitmasks, dp, geometry	2200	x794
379D	New Year Letter bitmasks, brute force, dp	2000	x1482
377C	Captains Mode bitmasks, dp, games	2200	x1102
375C	Circling Round Treasures bitmasks, shortest paths	2600	x472
367D	Sereja and Sets bitmasks, dfs and similar	2400	x616
356D	Bags and Coins bitmasks, constructive algorithms, dp, greedy	2700	x936
354B	Game with Strings bitmasks, dp, games	2400	x448
342D	Xenia and Dominoes bitmasks, dfs and similar, dp	2100	x487
336E	Vasily the Bear and Painting Square bitmasks, combinatorics, dp, implementation	2700	x109
333E	Summer Earnings binary search, bitmasks, brute force, geometry, sortings	2500	x1066
333D	Characteristics of Rectangles binary search, bitmasks, brute force, implementation, sortings	2100	x1844
327E	Axis Walking bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle	2300	x1340
309C	Memory for Arrays binary search, bitmasks, greedy	1900	x1286