Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round #792 (Div. 1)
2 days

Before contest
Codeforces Round #792 (Div. 2)
2 days

→ Filter Problems

Difficulty: —

bitmasks

Add tag

Problems

#	Name
1680E	Moving Chips bitmasks, dp, greedy	2000	x1837
1679F	Formalism for Formalism bitmasks, dp, math	2600	x151
1679E	Typical Party in Dorm bitmasks, brute force, combinatorics, dp, math, strings	2400	x447
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x488
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x397
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x473
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1010
1669H	Maximal AND bitmasks, greedy, math	1300	x8891
1665E	MinimizOR bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers	2500	x898
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x2379
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x10996
1659E	AND-MEX Walk bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2200	x860
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x7138
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x1719
1658D1	388535 (Easy Version) bitmasks, math	1600	x6277
1654F	Minimal String Xoration bitmasks, data structures, divide and conquer, greedy, hashing, sortings, strings	2800	x597
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x8844
1641D	Two Arrays bitmasks, brute force, combinatorics, greedy, hashing, math, two pointers	2700	x701
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x4305
1635A	Min Or Sum bitmasks, greedy	800	x17636
1634B	Fortune Telling bitmasks, math	1400	x12289
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x9055
1632B	Roof Construction bitmasks, constructive algorithms	1000	x16122
1630A	And Matching bitmasks, constructive algorithms	1500	x10765
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1518
1625A	Ancient Civilization bitmasks, greedy, math	800	x14999
1624G	MinOr Tree bitmasks, dfs and similar, dsu, graphs, greedy	1900	x3727
1622E	Math Test bitmasks, brute force, greedy	2200	x1291
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x614
1618F	Reverse bitmasks, constructive algorithms, dfs and similar, implementation, math, strings	2000	x3075
1616H	Keep XOR Low bitmasks, combinatorics, data structures, divide and conquer, dp, math	3000	x365
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x1462
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x11408
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x7523
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1384
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x2232
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x9557
1600J	Robot Factory bitmasks, dfs and similar	1400	x2689
1599J	Bob's Beautiful Array bitmasks, brute force, greedy	2600	x215
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x957
1594B	Special Numbers bitmasks, math	1100	x14304
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1231
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x5485
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x604
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x863
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x3483
1571E	Fix the String *special problem, bitmasks, dp, greedy	1700	x223
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x629
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x9808
1567B	MEXor Mixup bitmasks, greedy	1000	x17240
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x14114
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x16377
1560F2	Nearest Beautiful Number (hard version) bitmasks, brute force, constructive algorithms, dfs and similar, dp, greedy	2100	x3303
1560F1	Nearest Beautiful Number (easy version) binary search, bitmasks, brute force, constructive algorithms, dfs and similar, greedy	1900	x4647
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x20408
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x6825
1556G	Gates to Another World bitmasks, data structures, dsu, two pointers	3300	x171
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x914
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x4917
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x6731
1554B	Cobb bitmasks, brute force, greedy, math	1700	x10183
1553H	XOR and Distance bitmasks, divide and conquer, trees	2900	x426
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x13751
1552G	A Serious Referee bitmasks, brute force, dfs and similar, sortings	3000	x344
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x5303
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1100
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1229
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x12815
1543E	The Final Pursuit bitmasks, constructive algorithms, divide and conquer, graphs, greedy, math	2700	x326
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x6556
1543C	Need for Pink Slips bitmasks, brute force, dfs and similar, implementation, math, probabilities	1900	x4572
1533H	Submatrices *special problem, bitmasks, data structures, dp		x68
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x545
1527A	And Then There Were K bitmasks	800	x25647
1523F	Favorite Game bitmasks, dp	3300	x235
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x1694
1519F	Chests and Keys bitmasks, brute force, dfs and similar, dp, flows	3200	x185
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x9010
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x13765
1515H	Phoenix and Bits bitmasks, brute force, data structures, sortings	3500	x138
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x16202
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x10610
1511G	Chips on a Board bitmasks, brute force, data structures, dp, games, two pointers	2700	x439
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1014
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x554
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x494
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x12921
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1194
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x11850
1494A	ABC String bitmasks, brute force, implementation	900	x17844
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x295
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x681
1492D	Genius's Gambit bitmasks, constructive algorithms, greedy, math	1900	x5186
1491D	Zookeeper and The Infinite Zoo bitmasks, constructive algorithms, dp, greedy, math	1800	x5670
1479D	Odd Mineral Resource binary search, bitmasks, brute force, data structures, probabilities, trees	2900	x570
1479C	Continuous City bitmasks, constructive algorithms	2500	x1041
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x1825
1470B	Strange Definition bitmasks, graphs, hashing, math, number theory	1900	x5264
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1553
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2545

←