Problemset - Codeforces

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Codeforces Round #671 (Div. 2)
28:27:07
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bitmasks

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Problems

#	Name
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x7511
579A	Raising Bacteria bitmasks	1000	x23548
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x19048
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x12760
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x6217
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x12834
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x12208
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x9242
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x7593
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x15677
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x7255
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x6868
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x6581
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x6417
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x2771
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x11460
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x10337
550B	Preparing Olympiad bitmasks, brute force	1400	x9662
1270C	Make Good bitmasks, constructive algorithms, math	1400	x8682
1095C	Powers Of Two bitmasks, greedy	1400	x8363
961C	Chessboard bitmasks, brute force, implementation	1400	x4173
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x10080
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x5458
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x4818
224B	Array bitmasks, implementation, two pointers	1500	x4595
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x3215
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x2221
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x7831
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x6232
1225C	p-binary bitmasks, brute force, math	1600	x5918
913C	Party Lemonade bitmasks, dp, greedy	1600	x5814
878A	Short Program bitmasks, constructive algorithms	1600	x4170
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x4024
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x2997
243A	The Brand New Function bitmasks	1600	x2732
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1581
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x7552
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x7433
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x7153
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x7142
484A	Bits bitmasks, constructive algorithms	1700	x6821
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x6198
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x5806
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x5172
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x4808
1051D	Bicolorings bitmasks, dp	1700	x4492
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x2985
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x2658
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x2502
442A	Borya and Hanabi bitmasks, brute force, implementation	1700	x1767
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x1708
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x5744
580D	Kefa and Dishes bitmasks, dp	1800	x5424
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x5043
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x3041
513B2	Permutations bitmasks, divide and conquer, math	1800	x2324
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x1813
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x4579
1303D	Fill The Bag bitmasks, greedy	1900	x4444
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x4344
1207E	XOR Guessing bitmasks, interactive, math	1900	x3710
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x3352
510D	Fox And Jumping bitmasks, brute force, dp, math	1900	x3259
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x3117
1144E	Median String bitmasks, math, number theory, strings	1900	x2858
1220D	Alex and Julian bitmasks, math, number theory	1900	x2749
1017D	The Wu bitmasks, brute force, data structures	1900	x2518
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x2468
981D	Bookshelves bitmasks, dp, greedy	1900	x2277
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2126
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	1900	x1856
16E	Fish bitmasks, dp, probabilities	1900	x1856
993B	Open Communication bitmasks, brute force	1900	x1625
417D	Cunning Gena bitmasks, dp, greedy, sortings	1900	x1529
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1393
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1259
232B	Table bitmasks, combinatorics, dp, math	1900	x1046
309C	Memory for Arrays binary search, bitmasks, greedy	1900	x724
1288D	Minimax Problem binary search, bitmasks, dp	2000	x3827
242E	XOR on Segment bitmasks, data structures	2000	x3634
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x3193
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2000	x2933
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x2519
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x2491
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x2278
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2068
8C	Looking for Order bitmasks, dp	2000	x1956
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x1862
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x1806
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x1730
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1330
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x1330
513C	Second price auction bitmasks, probabilities	2000	x1289
379D	New Year Letter bitmasks, brute force, dp	2000	x1233
817E	Choosing The Commander bitmasks, data structures, trees	2000	x1153
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1053
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x499
413D	2048 bitmasks, dp	2000	x472
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x3133
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x2425

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