Problemset - Codeforces

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Codeforces Round #601 (Div. 1)
20:51:06
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Codeforces Round #601 (Div. 2)
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bitmasks

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Problems

#	Name
579A	Raising Bacteria bitmasks	1000	x17006
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1200	x15266
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x11671
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x10010
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x9147
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x7787
550B	Preparing Olympiad bitmasks, brute force	1500	x7558
1095C	Powers Of Two bitmasks, greedy	1400	x6314
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x6042
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x5927
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1400	x5913
484A	Bits bitmasks, constructive algorithms	1700	x5742
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1400	x5510
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x5488
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1800	x5270
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	900	x5194
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x5192
913C	Party Lemonade bitmasks, dp, greedy	1600	x4904
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x4749
580D	Kefa and Dishes bitmasks, dp	1900	x4517
1225C	p-binary bitmasks, brute force, math	1600	x4399
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x4307
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x4299
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1600	x4187
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x4087
878A	Short Program bitmasks, constructive algorithms	1600	x3722
961C	Chessboard bitmasks, brute force, implementation	1400	x3691
224B	Array bitmasks, implementation, two pointers	1500	x3683
1051D	Bicolorings bitmasks, dp	1700	x3622
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x3547
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x3400
1207E	XOR Guessing bitmasks, interactive, math	1800	x2975
242E	XOR on Segment bitmasks, data structures	2000	x2970
510D	Fox And Jumping bitmasks, brute force, dp, math	2100	x2909
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x2725
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x2697
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x2603
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2400	x2528
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x2517
453B	Little Pony and Harmony Chest bitmasks, brute force, dp	2200	x2483
581D	Three Logos bitmasks, brute force, constructive algorithms, geometry, implementation, math	1700	x2463
1144E	Median String bitmasks, math, number theory, strings	1900	x2409
243A	The Brand New Function bitmasks	1900	x2398
1017D	The Wu bitmasks, brute force, data structures	1900	x2303
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x2245
27B	Tournament bitmasks, brute force, dfs and similar, greedy	2000	x2237
1220D	Alex and Julian bitmasks, math, number theory	1900	x2225
513B2	Permutations bitmasks, divide and conquer, math	1800	x2216
401D	Roman and Numbers bitmasks, brute force, combinatorics, dp, number theory	2000	x2106
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2100	x2092
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x2088
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x2077
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x2068
981D	Bookshelves bitmasks, dp, greedy	1800	x1941
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x1925
620E	New Year Tree bitmasks, data structures, trees	2100	x1865
1030E	Vasya and Good Sequences bitmasks, dp	2100	x1806
792D	Paths in a Complete Binary Tree bitmasks, trees	1800	x1799
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x1771
11D	A Simple Task bitmasks, dp, graphs	2200	x1750
282E	Sausage Maximization bitmasks, data structures, trees	2100	x1723
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2100	x1717
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	2000	x1698
388B	Fox and Minimal path bitmasks, constructive algorithms, graphs, implementation, math	2000	x1673
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2400	x1661
442A	Borya and Hanabi bitmasks, brute force, implementation	2000	x1658
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2000	x1655
768E	Game of Stones bitmasks, dp, games	2000	x1642
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x1624
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1800	x1543
291C	Network Mask *special problem, bitmasks, brute force, implementation	2100	x1541
8C	Looking for Order bitmasks, dp	2000	x1535
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x1520
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x1516
993B	Open Communication bitmasks, brute force	1900	x1499
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2700	x1499
16E	Fish bitmasks, dp, probabilities	2100	x1488
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2200	x1415
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2100	x1403
451E	Devu and Flowers bitmasks, combinatorics, number theory	2400	x1402
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x1391
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2200	x1381
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2200	x1366
1215E	Marbles bitmasks, dp	2200	x1355
417D	Cunning Gena bitmasks, dp, greedy, sortings	2000	x1350
744B	Hongcow's Game bitmasks, divide and conquer, interactive	2000	x1300
1238E	Keyboard Purchase bitmasks, dp	2200	x1251
513C	Second price auction bitmasks, probabilities	2000	x1246
333D	Characteristics of Rectangles binary search, bitmasks, brute force, implementation, sortings	2100	x1245
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1213
1168C	And Reachability bitmasks, dp	2400	x1208
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	1700	x1177
379D	New Year Letter bitmasks, brute force, dp	2000	x1175
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2300	x1171
285D	Permutation Sum bitmasks, combinatorics, dp, implementation, meet-in-the-middle	1900	x1166
1234F	Yet Another Substring Reverse bitmasks, dp	2400	x1124
528D	Fuzzy Search bitmasks, brute force, fft	2500	x1088
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2100	x1079
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x1058
1185F	Two Pizzas bitmasks, brute force	2200	x1052

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