Problemset - Codeforces

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Codeforces Round (Div. 4)
25:40:11
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bitmasks

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Problems

#	Name
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19042
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x568
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5001
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11629
1365G	Secure Password bitmasks, combinatorics, constructive algorithms, interactive, math	2800	x1140
1364E	X-OR bitmasks, constructive algorithms, divide and conquer, interactive, probabilities	2700	x1406
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x17939
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18843
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1610
1360H	Binary Median binary search, bitmasks, brute force, constructive algorithms	2100	x4523
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12241
1342F	Make It Ascending bitmasks, brute force, dp	3000	x702
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7809
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x3192
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8388
1336E2	Chiori and Doll Picking (hard version) bitmasks, brute force, combinatorics, math	3500	x298
1336E1	Chiori and Doll Picking (easy version) bitmasks, brute force, combinatorics, math	2700	x662
1334G	Substring Search bitmasks, brute force, fft	2900	x359
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x8141
1331C	...And after happily lived ever they *special problem, bitmasks		x3147
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6648
1327G	Letters and Question Marks bitmasks, dp, string suffix structures	2800	x422
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1637
1326F2	Wise Men (Hard Version) bitmasks, dp, math	3200	x479
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x832
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11947
1322D	Reality Show bitmasks, dp	2800	x707
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x4160
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3906
1313D	Happy New Year bitmasks, dp, implementation	2500	x1324
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x16291
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x967
1303D	Fill The Bag bitmasks, greedy	1900	x7039
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	x426
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x309
1288D	Minimax Problem binary search, bitmasks, dp	2000	x7050
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7625
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13967
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x378
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1989
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1821
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1626
1238E	Keyboard Purchase bitmasks, dp	2200	x2920
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2545
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x537
1225C	p-binary bitmasks, brute force, math	1600	x8892
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x572
1220D	Alex and Julian bitmasks, math, number theory	1900	x3870
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7385
1215E	Marbles bitmasks, dp	2200	x2965
1214G	Feeling Good bitmasks, data structures	3200	x286
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1907
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2918
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2395
1207E	XOR Guessing bitmasks, interactive, math	1900	x5848
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6579
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9156
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1911
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2827
1185F	Two Pizzas bitmasks, brute force	2100	x2024
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4661
1168C	And Reachability bitmasks, dp	2200	x2364
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2810
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x657
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x624
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x547
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8871
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10972
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x997
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x877
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3650
1145C	Mystery Circuit bitmasks, brute force		x796
1144E	Median String bitmasks, math, number theory, strings	1900	x4111
1117F	Crisp String bitmasks, dp	2500	x531
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	x1888
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1617
1103D	Professional layer bitmasks, dp	3100	x404
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1969
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x94
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1232
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x27903
1095C	Powers Of Two bitmasks, greedy	1400	x16461
1093G	Multidimensional Queries bitmasks, data structures	2300	x1858
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2809
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2505
1051D	Bicolorings bitmasks, dp	1700	x7324
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2316
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15727
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x963
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x368
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x630
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x369
1030E	Vasya and Good Sequences bitmasks, dp	2000	x3049
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x302
1017D	The Wu bitmasks, brute force, data structures	1900	x3420
1016G	Appropriate Team bitmasks, math, number theory	2700	x261
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x790
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x944