Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
40:55:09
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bitmasks

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Problems

#	Name
906C	Party bitmasks, brute force, dp, graphs	2400	x1182
903F	Clear The Matrix bitmasks, dp	2200	x624
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x2997
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5130
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x3895
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x6650
878D	Magic Breeding bitmasks	2900	x640
878A	Short Program bitmasks, constructive algorithms	1600	x5291
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4256
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1984
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x890
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4526
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	x119
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1623
850E	Random Elections bitmasks, brute force, divide and conquer, fft, math	2800	x380
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1375
845F	Guards In The Storehouse bitmasks, dp	2500	x421
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2698
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5074
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x2993
796F	Sequence Recovery bitmasks, data structures, greedy	2800	x169
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2904
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1020
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x2260
776G	Sherlock and the Encrypted Data bitmasks, combinatorics, dp	2900	x330
772D	Varying Kibibits bitmasks, dp	2700	x572
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2211
768E	Game of Stones bitmasks, dp, games	2100	x2647
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2834
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1274
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1274
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x481
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	x1011
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1707
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1473
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14230
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1279
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x997
718E	Matvey's Birthday bitmasks, graphs	3300	x342
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x2602
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9294
698C	LRU bitmasks, dp, math, probabilities	2400	x1280
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x503
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1906
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6284
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1959
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
633G	Yash And Trees bitmasks, data structures, dfs and similar, math, number theory	2800	x722
620E	New Year Tree bitmasks, data structures, trees	2100	x5209
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9792
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	x3433
580D	Kefa and Dishes bitmasks, dp	1800	x9196
579A	Raising Bacteria bitmasks	1000	x56472
575C	Party bitmasks, brute force, graph matchings	2700	x211
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2200	x6691
566E	Restoring Map bitmasks, constructive algorithms, trees	3200	x601
550B	Preparing Olympiad bitmasks, brute force	1400	x19529
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2705
543C	Remembering Strings bitmasks, dp	2500	x1356
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21665
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x443
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2069
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2753
513C	Second price auction bitmasks, probabilities	2000	x1516
513B2	Permutations bitmasks, divide and conquer, math	1800	x2564
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x5185
504D	Misha and XOR bitmasks	2700	x298
484A	Bits bitmasks, constructive algorithms	1700	x10705
482C	Game with Strings bitmasks, dp, probabilities	2600	x872
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29096
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x393
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x36026
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x4528
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3248
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4092
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x2093
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x675
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9166
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2105
429C	Guess the Tree bitmasks, constructive algorithms, dp, greedy, trees	2300	x900
425B	Sereja and Table bitmasks, greedy	2200	x1282
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x2374
413D	2048 bitmasks, dp	2000	x750
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x3972
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x932
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x2434
385D	Bear and Floodlight bitmasks, dp, geometry	2200	x796
379D	New Year Letter bitmasks, brute force, dp	2000	x1483
377C	Captains Mode bitmasks, dp, games	2200	x1106
375C	Circling Round Treasures bitmasks, shortest paths	2600	x473
367D	Sereja and Sets bitmasks, dfs and similar	2400	x617
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	x1070