Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
25:41:55
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Codeforces Round 941 (Div. 2)
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bitmasks

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Problems

#	Name
1322D	Reality Show bitmasks, dp	2800	x691
1322B	Present binary search, bitmasks, constructive algorithms, data structures, math, sortings	2100	x3893
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3438
1313D	Happy New Year bitmasks, dp, implementation	2500	x1106
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15762
1305G	Kuroni and Antihype bitmasks, brute force, dp, dsu, graphs	3500	x938
1303D	Fill The Bag bitmasks, greedy	1900	x6797
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	x414
1292F	Nora's Toy Boxes bitmasks, combinatorics, dp	3500	x299
1288D	Minimax Problem binary search, bitmasks, dp	2000	x6657
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7323
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13572
1261F	Xor-Set bitmasks, divide and conquer, math	3100	x370
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1927
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1715
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1465
1238E	Keyboard Purchase bitmasks, dp	2200	x2725
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2356
1225G	To Make 1 bitmasks, constructive algorithms, dp, greedy, number theory	3100	x521
1225C	p-binary bitmasks, brute force, math	1600	x8638
1221G	Graph And Numbers bitmasks, brute force, combinatorics, dp, meet-in-the-middle	2900	x518
1220D	Alex and Julian bitmasks, math, number theory	1900	x3684
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7082
1215E	Marbles bitmasks, dp	2200	x2909
1214G	Feeling Good bitmasks, data structures	3200	x279
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1845
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2713
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2093
1207E	XOR Guessing bitmasks, interactive, math	1900	x5595
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6282
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x8781
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1729
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2552
1185F	Two Pizzas bitmasks, brute force	2100	x1800
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4592
1168C	And Reachability bitmasks, dp	2200	x2322
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2684
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x644
1152F2	Neko Rules the Catniverse (Large Version) bitmasks, dp, matrices	3000	x591
1152F1	Neko Rules the Catniverse (Small Version) bitmasks, dp, matrices	2800	x512
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8799
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10671
1148F	Foo Fighters bitmasks, constructive algorithms	2700	x966
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x821
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3467
1145C	Mystery Circuit bitmasks, brute force		x789
1144E	Median String bitmasks, math, number theory, strings	1900	x3994
1117F	Crisp String bitmasks, dp	2500	x517
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1442
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1808
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1586
1103D	Professional layer bitmasks, dp	3100	x394
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1899
1097H	Mateusz and an Infinite Sequence bitmasks, brute force, dp, strings	3400	x92
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1213
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26489
1095C	Powers Of Two bitmasks, greedy	1400	x15672
1093G	Multidimensional Queries bitmasks, data structures	2300	x1820
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2754
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2374
1051D	Bicolorings bitmasks, dp	1700	x7113
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2170
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15101
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x951
1036G	Sources and Sinks bitmasks, brute force, dfs and similar	2700	x361
1034E	Little C Loves 3 III bitmasks, dp, math	3200	x585
1033F	Boolean Computer bitmasks, brute force, fft, math	2800	x364
1030E	Vasya and Good Sequences bitmasks, dp	2000	x2967
1027G	X-mouse in the Campus bitmasks, math, number theory	2600	x293
1017D	The Wu bitmasks, brute force, data structures	1900	x3331
1016G	Appropriate Team bitmasks, math, number theory	2700	x253
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x767
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x921
1006F	Xor-Paths bitmasks, brute force, dp, meet-in-the-middle	2100	x4624
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x691
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1478
993B	Open Communication bitmasks, brute force	1900	x1928
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2185
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x1991
981D	Bookshelves bitmasks, dp, greedy	1900	x3156
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1681
961C	Chessboard bitmasks, brute force, implementation	1400	x5215
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x3807
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1936
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3301
938G	Shortest Path Queries bitmasks, data structures, dsu, graphs	2900	x857
938F	Erasing Substrings bitmasks, dp, greedy	2700	x467
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1671
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1668
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x892
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1418
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1376
913E	Logical Expression bitmasks, dp, shortest paths	2400	x743
913C	Party Lemonade bitmasks, dp, greedy	1600	x7735
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11305
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x733
906C	Party bitmasks, brute force, dp, graphs	2400	x1179
903F	Clear The Matrix bitmasks, dp	2200	x623
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x2969