Problemset - Codeforces

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bitmasks

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Problems

#	Name
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x407
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1608
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x470
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x816
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11612
1322D	Reality Show bitmasks, dp	2800	x699
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x3956
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3500
1313D	Happy New Year bitmasks, dp, implementation	2500	x1163
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15920
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x947
1303D	Fill The Bag bitmasks, greedy	1900	x6835
1302F	Keep talking and nobody explodes -- easy bitmasks, brute force, expression parsing		x72
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x419
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x304
1288D	Minimax Problem binary search, bitmasks, dp	2000	x6708
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7354
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13621
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x370
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1948
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1729
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1473
1238E	Keyboard Purchase bitmasks, dp	2200	x2743
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2372
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x523
1225C	p-binary bitmasks, brute force, math	1600	x8658
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x520
1220D	Alex and Julian bitmasks, math, number theory	1900	x3692
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7101
1215E	Marbles bitmasks, dp	2200	x2922
1214G	Feeling Good bitmasks, data structures	3200	x281
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1854
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2729
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2110
1207E	XOR Guessing bitmasks, interactive, math	1900	x5669
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6399
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9005
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1887
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2572
1185F	Two Pizzas bitmasks, brute force	2100	x1806
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4607
1168C	And Reachability bitmasks, dp	2200	x2337
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2790
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x647
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x598
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x520
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8817
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10722
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x971
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x828
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3525
1145C	Mystery Circuit bitmasks, brute force		x790
1144E	Median String bitmasks, math, number theory, strings	1900	x4064
1117F	Crisp String bitmasks, dp	2500	x517
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1456
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1816
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1595
1103D	Professional layer bitmasks, dp	3100	x400
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1916
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x93
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1214
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26790
1095C	Powers Of Two bitmasks, greedy	1400	x15859
1093G	Multidimensional Queries bitmasks, data structures	2300	x1832
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2765
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2412
1051D	Bicolorings bitmasks, dp	1700	x7156
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2192
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15268
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x956
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x361
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x601
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2974
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x297
1017D	The Wu bitmasks, brute force, data structures	1900	x3347
1016G	Appropriate Team bitmasks, math, number theory	2700	x257
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x771
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x939
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4717
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x704
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1480
993B	Open Communication bitmasks, brute force	1900	x1930
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2195
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2002
981D	Bookshelves bitmasks, dp, greedy	1900	x3177
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1692
961C	Chessboard bitmasks, brute force, implementation	1400	x5234
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x3866
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1944
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3319
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x861
938F	Erasing Substrings bitmasks, dp, greedy	2700	x470
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1683
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1673
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x897
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1452
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1394
913E	Logical Expression bitmasks, dp, shortest paths	2400	x744
913C	Party Lemonade bitmasks, dp, greedy	1600	x7749