Problemset - Codeforces

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Codeforces Round #672 (Div. 2)
4 days

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Difficulty: —

bitmasks

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Problems

#	Name
579A	Raising Bacteria bitmasks	1000	x23568
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x19070
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x15700
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x12854
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x12777
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x12225
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x11472
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x10350
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x10105
550B	Preparing Olympiad bitmasks, brute force	1400	x9670
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x9256
1270C	Make Good bitmasks, constructive algorithms, math	1400	x8695
1095C	Powers Of Two bitmasks, greedy	1400	x8373
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x7854
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x7603
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x7561
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x7530
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x7440
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x7261
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x7164
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x7147
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x6871
484A	Bits bitmasks, constructive algorithms	1700	x6826
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x6591
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x6424
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x6238
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x6218
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x6202
1225C	p-binary bitmasks, brute force, math	1600	x5922
913C	Party Lemonade bitmasks, dp, greedy	1600	x5818
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x5812
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x5751
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x5488
580D	Kefa and Dishes bitmasks, dp	1800	x5428
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x5176
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x5049
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x4822
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x4815
224B	Array bitmasks, implementation, two pointers	1500	x4597
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x4587
1051D	Bicolorings bitmasks, dp	1700	x4496
1303D	Fill The Bag bitmasks, greedy	1900	x4447
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x4350
878A	Short Program bitmasks, constructive algorithms	1600	x4176
961C	Chessboard bitmasks, brute force, implementation	1400	x4175
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x4027
1288D	Minimax Problem binary search, bitmasks, dp	2000	x3835
1207E	XOR Guessing bitmasks, interactive, math	1900	x3711
242E	XOR on Segment bitmasks, data structures	2000	x3642
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x3355
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x3262
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x3216
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x3201
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2200	x3179
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x3133
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x3124
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x3045
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x3003
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x2986
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x2937
1144E	Median String bitmasks, math, number theory, strings	1900	x2859
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x2778
1220D	Alex and Julian bitmasks, math, number theory	1900	x2750
243A	The Brand New Function bitmasks	1600	x2735
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2200	x2707
1331C	...And after happily lived ever they bitmasks		x2677
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x2667
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x2523
1017D	The Wu bitmasks, brute force, data structures	1900	x2519
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x2504
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x2492
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x2470
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x2430
620E	New Year Tree bitmasks, data structures, trees	2100	x2344
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x2336
513B2	Permutations bitmasks, divide and conquer, math	1800	x2324
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x2288
981D	Bookshelves bitmasks, dp, greedy	1900	x2279
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x2228
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x2221
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2126
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x2075
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2074
11D	A Simple Task bitmasks, dp, graphs	2200	x2059
282E	Sausage Maximization bitmasks, data structures, trees	2200	x2001
8C	Looking for Order bitmasks, dp	2000	x1957
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x1906
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x1882
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x1863
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x1857
16E	Fish bitmasks, dp, probabilities	1900	x1857
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x1846
768E	Game of Stones bitmasks, dp, games	2100	x1820
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x1813
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x1806
1215E	Marbles bitmasks, dp	2200	x1801
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x1767
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x1736
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x1735
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x1714

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