Problemset - Codeforces

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bitmasks

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Problems

#	Name
1658D1	388535 (Easy Version) bitmasks, math	1600	x9164
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x1214
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x14337
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x1189
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6306
1635A	Min Or Sum bitmasks, greedy	800	x23059
1634B	Fortune Telling bitmasks, math	1400	x16840
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12824
1632B	Roof Construction bitmasks, constructive algorithms	1000	x22691
1630A	And Matching bitmasks, constructive algorithms	1500	x14644
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x2070
1625A	Ancient Civilization bitmasks, greedy, math	800	x17295
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x6024
1622E	Math Test bitmasks, brute force, greedy	2200	x1919
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x915
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x4289
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x993
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x1930
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x16101
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x10319
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x2137
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x2959
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14854
1600J	Robot Factory bitmasks, dfs and similar	1400	x3967
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x303
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x1449
1594B	Special Numbers bitmasks, math	1100	x20078
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1667
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x8081
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x987
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1343
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5692
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x340
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x813
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x12238
1567B	MEXor Mixup bitmasks, greedy	1000	x23447
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17684
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19756
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x4425
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x6183
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x31964
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8660
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x340
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1260
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x7057
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8973
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12869
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x713
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x18016
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x534
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x7085
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1551
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1478
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16816
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x414
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7645
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x5317
1533H	Submatrices *special problem, bitmasks, data structures, dp		x84
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x826
1527A	And Then There Were K bitmasks	800	x36023
1523F	Favorite Game bitmasks, dp	3300	x437
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2187
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x435
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x12030
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x19678
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x240
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x25444
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x14952
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x803
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1517
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x821
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x929
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x17424
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1555
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x14441
1494A	ABC String bitmasks, brute force, implementation	900	x20974
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x454
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x948
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x6135
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x7235
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x1028
1479C	Continuous City bitmasks, constructive algorithms	2500	x1340
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x2383
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x6345
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1999
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2882
1466E	Apollo versus Pan bitmasks, brute force, math	1800	x7358
1463F	Max Correct Set bitmasks, dp, math	3100	x610
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x19551
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x3011
1451E1	Bitwise Queries (Easy Version) bitmasks, constructive algorithms, interactive, math	2000	x4433
1450G	Communism bitmasks, dp, trees	3500	x316
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3660
1439E	Cheat and Win bitmasks, data structures, games, trees	3500	x222
1438E	Yurii Can Do Everything binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers	2500	x1352
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4221
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x720
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1435
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x792
1423I	Lookup Tables bitmasks	3000	x106