Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round (Div. 2)
4 days

→ Filter Problems

Difficulty: —

bitmasks

Add tag

Problems

#	Name
1527A	And Then There Were K bitmasks	800	x29641
1698A	XOR Mixup bitmasks, brute force	800	x24938
1421A	XORwice bitmasks, greedy, math	800	x23895
1635A	Min Or Sum bitmasks, greedy	800	x20224
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x19248
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x18919
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x17977
1696A	NIT orz! bitmasks, greedy	800	x17123
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x16977
1805A	We Need the Zero bitmasks, brute force	800	x16375
1625A	Ancient Civilization bitmasks, greedy, math	800	x16226
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x13998
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x13988
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x24236
1494A	ABC String bitmasks, brute force, implementation	900	x19286
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x17665
579A	Raising Bacteria bitmasks	1000	x45901
1567B	MEXor Mixup bitmasks, greedy	1000	x19388
1632B	Roof Construction bitmasks, constructive algorithms	1000	x18745
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x15909
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x31405
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x19146
1594B	Special Numbers bitmasks, math	1100	x16849
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x15250
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x13867
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x13566
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x8213
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x21787
1420B	Rock and Lever bitmasks, math	1200	x20155
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x19125
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x17287
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x15740
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x13223
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x12911
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x25396
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x14728
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x14591
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x14497
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x13531
1669H	Maximal AND bitmasks, greedy, math	1300	x12952
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x12501
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x11408
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x10298
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x10038
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x9628
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x8711
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8168
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x4598
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x16731
550B	Preparing Olympiad bitmasks, brute force	1400	x16104
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x15852
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x14702
1634B	Fortune Telling bitmasks, math	1400	x14315
1095C	Powers Of Two bitmasks, greedy	1400	x13662
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13087
1270C	Make Good bitmasks, constructive algorithms, math	1400	x12785
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x12243
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x11101
961C	Chessboard bitmasks, brute force, implementation	1400	x5047
1600J	Robot Factory bitmasks, dfs and similar	1400	x3423
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x16588
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x15974
1630A	And Matching bitmasks, constructive algorithms	1500	x12747
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x11383
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9009
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x8526
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x8018
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x7501
224B	Array bitmasks, implementation, two pointers	1500	x6715
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x5988
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4291
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3097
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x12422
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11013
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x10927
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x9370
1225C	p-binary bitmasks, brute force, math	1600	x8169
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x8137
1658D1	388535 (Easy Version) bitmasks, math	1600	x7825
1775C	Interesting Sequence bitmasks, math	1600	x7644
913C	Party Lemonade bitmasks, dp, greedy	1600	x7409
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x6480
1778C	Flexible String bitmasks, brute force, strings	1600	x6263
878A	Short Program bitmasks, constructive algorithms	1600	x5050
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x4874
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x3918
243A	The Brand New Function bitmasks	1600	x3579
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1633
1554B	Cobb bitmasks, brute force, greedy, math	1700	x11479
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x11222
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x10975
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x10555
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x10330
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x10313
484A	Bits bitmasks, constructive algorithms	1700	x9537
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x7665
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7598
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x7476
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7325
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7048

←