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bitmasks

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Problems

#	Name
1792D	Fixed Prefix Permutations binary search, bitmasks, data structures, hashing, math, sortings	1700	x5911
1329B	Dreamoon Likes Sequences bitmasks, combinatorics, math	1700	x6398
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6490
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6633
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6641
1760G	SlavicG's Favorite Problem bitmasks, dfs and similar, graphs	1700	x6941
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7098
1883E	Look Back bitmasks, greedy	1700	x7110
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7133
1051D	Bicolorings bitmasks, dp	1700	x7155
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7450
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7575
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7638
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7736
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7876
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8347
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x9008
484A	Bits bitmasks, constructive algorithms	1700	x10738
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11244
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11551
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11610
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11883
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12454
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x13039
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1665
243A	The Brand New Function bitmasks	1600	x3812
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x4386
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5077
878A	Short Program bitmasks, constructive algorithms	1600	x5301
1778C	Flexible String bitmasks, brute force, strings	1600	x7704
913C	Party Lemonade bitmasks, dp, greedy	1600	x7749
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8141
1225C	p-binary bitmasks, brute force, math	1600	x8657
1658D1	388535 (Easy Version) bitmasks, math	1600	x8782
1775C	Interesting Sequence bitmasks, math	1600	x9717
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10073
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10710
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11865
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12277
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13543
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3541
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4530
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6291
224B	Array bitmasks, implementation, two pointers	1500	x7165
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9190
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x9935
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9936
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10179
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10448
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12135
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13254
1630A	And Matching bitmasks, constructive algorithms	1500	x14109
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18162
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18408
1600J	Robot Factory bitmasks, dfs and similar	1400	x3786
961C	Chessboard bitmasks, brute force, implementation	1400	x5234
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10852
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x11217
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12267
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12655
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13617
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13825
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13968
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14245
1634B	Fortune Telling bitmasks, math	1400	x15729
1095C	Powers Of Two bitmasks, greedy	1400	x15849
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15914
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x17100
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x18806
550B	Preparing Olympiad bitmasks, brute force	1400	x19586
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5159
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8816
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9800
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10646
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11411
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12637
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12668
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13327
1926D	Vlad and Division bitmasks, greedy	1300	x13746
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13768
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14359
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x14512
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15259
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16095
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16178
1669H	Maximal AND bitmasks, greedy, math	1300	x16524
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x17042
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x29148
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11484
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13401
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x14099
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14264
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15260
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17351
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18407
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22945
1420B	Rock and Lever bitmasks, math	1200	x23825
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26767
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x9002
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14427