Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
13:33:33
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bitmasks

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Problems

#	Name
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x5896
1622E	Math Test bitmasks, brute force, greedy	2200	x1892
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x889
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4185
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x911
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x1884
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15864
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10218
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2068
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x2922
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14500
1600J	Robot Factory bitmasks, dfs and similar	1400	x3888
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x298
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x1417
1594B	Special Numbers bitmasks, math	1100	x19837
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1631
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7935
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x926
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1288
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5552
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x335
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x801
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12147
1567B	MEXor Mixup bitmasks, greedy	1000	x22933
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17497
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19537
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4368
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6124
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x31109
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8576
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x322
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1224
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6882
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8842
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12737
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x700
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17797
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x527
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6985
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1526
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1453
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16640
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x408
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7582
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5279
1533H	Submatrices *special problem, bitmasks, data structures, dp		x84
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x787
1527A	And Then There Were K bitmasks	800	x35414
1523F	Favorite Game bitmasks, dp	3300	x417
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2168
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x413
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11906
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19275
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x232
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x24751
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14607
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x771
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1485
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x801
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x911
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x17016
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1523
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x14295
1494A	ABC String bitmasks, brute force, implementation	900	x20833
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x419
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x926
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6083
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7154
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x1013
1479C	Continuous City bitmasks, constructive algorithms	2500	x1321
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x2336
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6303
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1956
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2866
1466E	Apollo versus Pan bitmasks, brute force, math	1800	x7284
1463F	Max Correct Set bitmasks, dp, math	3100	x582
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x19325
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2954
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4345
1450G	Communism bitmasks, dp, trees	3500	x311
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3612
1439E	Cheat and Win bitmasks, data structures, games, trees	3500	x221
1438E	Yurii Can Do Everything binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers	2500	x1339
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4173
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x701
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1399
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x772
1423I	Lookup Tables bitmasks	3000	x105
1421A	XORwice bitmasks, greedy, math	800	x28787
1420B	Rock and Lever bitmasks, math	1200	x25553
1416C	XOR Inverse bitmasks, data structures, divide and conquer, dp, greedy, math, sortings, strings, trees	2000	x4399
1415D	XOR-gun bitmasks, brute force, constructive algorithms	2000	x5381
1411G	No Game No Life bitmasks, games, math, matrices	2700	x660
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1631
1401F	Reverse and Swap binary search, bitmasks, data structures	2400	x1738
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x956
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1082
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14072
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x486
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3522