Problemset - Codeforces

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Codeforces Round (Div. 2)
46:09:43
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bitmasks

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Problems

#	Name
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1385
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x17850
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18796
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1604
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4512
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12213
1342F	Make It Ascending bitmasks, brute force, dp	3000	x701
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7807
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3164
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8359
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x297
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x658
1334G	Substring Search bitmasks, brute force, fft	2900	x357
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x8107
1331C	...And after happily lived ever they *special problem, bitmasks		x3143
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6596
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x408
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1623
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x478
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x831
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11910
1322D	Reality Show bitmasks, dp	2800	x707
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x4149
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3786
1313D	Happy New Year bitmasks, dp, implementation	2500	x1315
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x16243
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x962
1303D	Fill The Bag bitmasks, greedy	1900	x7022
1302F	Keep talking and nobody explodes -- easy bitmasks, brute force, expression parsing		x74
1299D	Around the World bitmasks, combinatorics, dfs and similar, dp, graphs, graphs, math, trees	3000	x425
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x309
1288D	Minimax Problem binary search, bitmasks, dp	2000	x7013
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7595
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13930
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x378
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1979
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1813
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1621
1238E	Keyboard Purchase bitmasks, dp	2200	x2904
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2411
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x535
1225C	p-binary bitmasks, brute force, math	1600	x8866
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x571
1220D	Alex and Julian bitmasks, math, number theory	1900	x3863
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7358
1215E	Marbles bitmasks, dp	2200	x2947
1214G	Feeling Good bitmasks, data structures	3200	x286
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1892
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2909
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2231
1207E	XOR Guessing bitmasks, interactive, math	1900	x5833
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6546
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9137
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1909
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2822
1185F	Two Pizzas bitmasks, brute force	2100	x2018
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4648
1168C	And Reachability bitmasks, dp	2200	x2355
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2801
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x651
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x615
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x532
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8860
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10929
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x991
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x873
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3644
1145C	Mystery Circuit bitmasks, brute force		x795
1144E	Median String bitmasks, math, number theory, strings	1900	x4099
1117F	Crisp String bitmasks, dp	2500	x522
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1465
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1878
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1615
1103D	Professional layer bitmasks, dp	3100	x404
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1957
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x94
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1222
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x27708
1095C	Powers Of Two bitmasks, greedy	1400	x16339
1093G	Multidimensional Queries bitmasks, data structures	2300	x1851
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2796
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2455
1051D	Bicolorings bitmasks, dp	1700	x7306
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2291
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15650
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	x618
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x369
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2996
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x301
1017D	The Wu bitmasks, brute force, data structures	1900	x3405
1016G	Appropriate Team bitmasks, math, number theory	2700	x261
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x784
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	x5076
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x718
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1682
993B	Open Communication bitmasks, brute force	1900	x1937
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2266