Problemset - Codeforces

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Before contest
Codeforces Round #647 (Div. 1) - Thanks, Algo Muse!
3 days

Before contest
Codeforces Round #647 (Div. 2) - Thanks, Algo Muse!
3 days

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bitmasks

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Problems

#	Name
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x6363
579A	Raising Bacteria bitmasks	1000	x20956
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x17530
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x11713
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x5894
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x11059
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x8641
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x7033
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x14114
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x6599
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x6465
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x6346
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x5979
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x2511
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x9234
550B	Preparing Olympiad bitmasks, brute force	1400	x8802
1270C	Make Good bitmasks, constructive algorithms, math	1400	x7901
1095C	Powers Of Two bitmasks, greedy	1400	x7585
961C	Chessboard bitmasks, brute force, implementation	1400	x3989
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x4928
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x4632
224B	Array bitmasks, implementation, two pointers	1500	x4229
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x3031
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x2097
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x5577
913C	Party Lemonade bitmasks, dp, greedy	1600	x5481
1225C	p-binary bitmasks, brute force, math	1600	x5445
878A	Short Program bitmasks, constructive algorithms	1600	x4002
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x3807
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x2880
243A	The Brand New Function bitmasks	1600	x2611
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1565
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x6700
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x6440
484A	Bits bitmasks, constructive algorithms	1700	x6395
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x5979
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x5769
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x5288
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x4848
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x4376
1051D	Bicolorings bitmasks, dp	1700	x4178
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x2831
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x2580
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x2374
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x1747
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x1642
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x5279
580D	Kefa and Dishes bitmasks, dp	1800	x5019
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x4609
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x2753
513B2	Permutations bitmasks, divide and conquer, math	1800	x2289
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x1763
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x4076
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x4061
1303D	Fill The Bag bitmasks, greedy	1900	x4030
1207E	XOR Guessing bitmasks, interactive, math	1900	x3495
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x3106
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x3084
1144E	Median String bitmasks, math, number theory, strings	1900	x2672
1220D	Alex and Julian bitmasks, math, number theory	1900	x2577
1017D	The Wu bitmasks, brute force, data structures	1900	x2435
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x2323
981D	Bookshelves bitmasks, dp, greedy	1900	x2166
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2018
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x1767
16E	Fish bitmasks, dp, probabilities	1900	x1672
993B	Open Communication bitmasks, brute force	1900	x1577
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x1471
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1354
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1222
232B	Table bitmasks, combinatorics, dp, math	1900	x1024
309C	Memory for Arrays binary search, bitmasks, greedy	1900	x670
242E	XOR on Segment bitmasks, data structures	2000	x3411
1288D	Minimax Problem binary search, bitmasks, dp	2000	x3406
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x2765
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x2368
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x2348
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x2082
1030E	Vasya and Good Sequences bitmasks, dp	2000	x1960
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x1770
8C	Looking for Order bitmasks, dp	2000	x1757
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x1703
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x1586
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1267
513C	Second price auction bitmasks, probabilities	2000	x1266
379D	New Year Letter bitmasks, brute force, dp	2000	x1208
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x1190
817E	Choosing The Commander bitmasks, data structures, trees	2000	x1060
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x966
413D	2048 bitmasks, dp	2000	x455
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x401
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x2535
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x2199
620E	New Year Tree bitmasks, data structures, trees	2100	x2184
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x1932
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x1796
768E	Game of Stones bitmasks, dp, games	2100	x1757
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x1588
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x1525
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x1500

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