Problemset - Codeforces

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Codeforces Round (Div. 2)
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bitmasks

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Problems

#	Name
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7796
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3155
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8345
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x294
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x655
1334G	Substring Search bitmasks, brute force, fft	2900	x357
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x8037
1331C	...And after happily lived ever they *special problem, bitmasks		x3142
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6584
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x408
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1618
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x475
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x827
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11841
1322D	Reality Show bitmasks, dp	2800	x707
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x4135
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3757
1313D	Happy New Year bitmasks, dp, implementation	2500	x1310
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x16204
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x959
1303D	Fill The Bag bitmasks, greedy	1900	x7001
1302F	Keep talking and nobody explodes -- easy bitmasks, brute force, expression parsing		x73
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x424
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x309
1288D	Minimax Problem binary search, bitmasks, dp	2000	x6935
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7554
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13889
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x371
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1968
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1758
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1618
1238E	Keyboard Purchase bitmasks, dp	2200	x2877
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2403
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x527
1225C	p-binary bitmasks, brute force, math	1600	x8850
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x522
1220D	Alex and Julian bitmasks, math, number theory	1900	x3857
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7320
1215E	Marbles bitmasks, dp	2200	x2936
1214G	Feeling Good bitmasks, data structures	3200	x286
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1861
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2885
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2205
1207E	XOR Guessing bitmasks, interactive, math	1900	x5816
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6517
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9103
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1901
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2806
1185F	Two Pizzas bitmasks, brute force	2100	x1989
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4632
1168C	And Reachability bitmasks, dp	2200	x2353
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2798
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x650
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x612
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x530
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8843
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10878
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x988
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x869
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3542
1145C	Mystery Circuit bitmasks, brute force		x794
1144E	Median String bitmasks, math, number theory, strings	1900	x4086
1117F	Crisp String bitmasks, dp	2500	x520
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1464
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1841
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1605
1103D	Professional layer bitmasks, dp	3100	x402
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1943
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x94
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1219
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x27450
1095C	Powers Of Two bitmasks, greedy	1400	x16110
1093G	Multidimensional Queries bitmasks, data structures	2300	x1842
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2790
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2435
1051D	Bicolorings bitmasks, dp	1700	x7285
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2218
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15555
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x962
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x367
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x617
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x368
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2989
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x299
1017D	The Wu bitmasks, brute force, data structures	1900	x3388
1016G	Appropriate Team bitmasks, math, number theory	2700	x259
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x781
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x944
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4975
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x715
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1671
993B	Open Communication bitmasks, brute force	1900	x1936
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2256
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2040
981D	Bookshelves bitmasks, dp, greedy	1900	x3204
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1719
961C	Chessboard bitmasks, brute force, implementation	1400	x5256
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x3895
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1967
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3342