Problemset - Codeforces

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Codeforces Round 968 (Div. 2)
14:11:40
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bitmasks

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Problems

#	Name
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15713
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10157
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14269
1600J	Robot Factory bitmasks, dfs and similar	1400	x3863
1594B	Special Numbers bitmasks, math	1100	x19730
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7861
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5484
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x334
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12091
1567B	MEXor Mixup bitmasks, greedy	1000	x22647
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17423
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19475
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6084
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x30658
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8542
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6816
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8802
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12688
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17710
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6943
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16508
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7557
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5260
1527A	And Then There Were K bitmasks	800	x35157
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11830
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19056
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x24426
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14477
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16860
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x14250
1494A	ABC String bitmasks, brute force, implementation	900	x20750
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6065
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7125
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6274
1466E	Apollo versus Pan bitmasks, brute force, math	1800	x7250
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x19220
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4327
1421A	XORwice bitmasks, greedy, math	800	x28557
1420B	Rock and Lever bitmasks, math	1200	x25227
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4342
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5349
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14018
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5228
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19153
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5022
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11698
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x18058
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18943
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x12310
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7825
1338B	Edge Weight Assignment bitmasks, constructive algorithms, dfs and similar, greedy, math, trees	1800	x8405
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x8156
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6662
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x12002
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x16379
1303D	Fill The Bag bitmasks, greedy	1900	x7059
1288D	Minimax Problem binary search, bitmasks, dp	2000	x7096
1285D	Dr. Evil Underscores bitmasks, brute force, dfs and similar, divide and conquer, dp, greedy, strings, trees	1900	x7665
1270C	Make Good bitmasks, constructive algorithms, math	1400	x14007
1225C	p-binary bitmasks, brute force, math	1600	x8916
1220D	Alex and Julian bitmasks, math, number theory	1900	x3878
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7404
1209E1	Rotate Columns (easy version) bitmasks, brute force, dp, greedy, sortings	2000	x2938
1207E	XOR Guessing bitmasks, interactive, math	1900	x5871
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6611
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9234
1174D	Ehab and the Expected XOR Problem bitmasks, constructive algorithms	1900	x4672
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8878
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x11054
1146C	Tree Diameter bitmasks, graphs, interactive	1700	x3665
1144E	Median String bitmasks, math, number theory, strings	1900	x4129
1102F	Elongated Matrix binary search, bitmasks, brute force, dp, graphs	2000	x1980
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x28167
1095C	Powers Of Two bitmasks, greedy	1400	x16573
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2817
1051D	Bicolorings bitmasks, dp	1700	x7338
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15820
1030E	Vasya and Good Sequences bitmasks, dp	2000	x3064
1017D	The Wu bitmasks, brute force, data structures	1900	x3432
993B	Open Communication bitmasks, brute force	1900	x1942
981D	Bookshelves bitmasks, dp, greedy	1900	x3224
961C	Chessboard bitmasks, brute force, implementation	1400	x5277
960C	Subsequence Counting bitmasks, constructive algorithms, greedy, implementation	1700	x3912
959E	Mahmoud and Ehab and the xor-MST bitmasks, dp, graphs, implementation, math	1900	x3374
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1894
913C	Party Lemonade bitmasks, dp, greedy	1600	x7851
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11903
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3160
895C	Square Subsets bitmasks, combinatorics, dp, math	2000	x5393
888E	Maximum Subsequence bitmasks, divide and conquer, meet-in-the-middle	1800	x7099
878A	Short Program bitmasks, constructive algorithms	1600	x5413
877E	Danil and a Part-time Job bitmasks, data structures, trees	2000	x4384
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4593
817E	Choosing The Commander bitmasks, data structures, trees	2000	x2857
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5151
803F	Coprime Subsequences bitmasks, combinatorics, number theory	2000	x3177
792D	Paths in a Complete Binary Tree bitmasks, trees	1900	x2989
778B	Bitwise Formula bitmasks, brute force, dfs and similar, expression parsing, implementation	1800	x2298
769D	k-Interesting Pairs Of Integers *special problem, bitmasks, brute force, meet-in-the-middle	1700	x2272
744B	Hongcow's Game bitmasks, divide and conquer, interactive	1900	x1716