Problemset - Codeforces

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bitmasks

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Problems

#	Name
579A	Raising Bacteria bitmasks	1000	x56081
1915A	Odd One Out bitmasks, implementation	800	x49333
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x38292
467B	Fedor and New Game bitmasks, brute force, constructive algorithms, implementation	1100	x35823
1527A	And Then There Were K bitmasks	800	x33867
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31016
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x28993
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x28456
1698A	XOR Mixup bitmasks, brute force	800	x27790
1421A	XORwice bitmasks, greedy, math	800	x27207
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27042
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26547
1420B	Rock and Lever bitmasks, math	1200	x23598
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22713
1635A	Min Or Sum bitmasks, greedy	800	x22063
535B	Tavas and SaDDas bitmasks, brute force, combinatorics, implementation	1100	x21604
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21472
1567B	MEXor Mixup bitmasks, greedy	1000	x21419
1805A	We Need the Zero bitmasks, brute force	800	x20963
1632B	Roof Construction bitmasks, constructive algorithms	1000	x20804
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x20738
1494A	ABC String bitmasks, brute force, implementation	900	x20402
550B	Preparing Olympiad bitmasks, brute force	1400	x19445
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19145
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19084
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19065
1594B	Special Numbers bitmasks, math	1100	x18817
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x18730
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18334
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18309
1696A	NIT orz! bitmasks, greedy	800	x18098
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18048
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x17848
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x17635
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17286
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17145
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17002
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x17000
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x16955
1625A	Ancient Civilization bitmasks, greedy, math	800	x16941
1669H	Maximal AND bitmasks, greedy, math	1300	x16147
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16069
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16005
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x15862
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15818
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15800
1095C	Powers Of Two bitmasks, greedy	1400	x15713
1634B	Fortune Telling bitmasks, math	1400	x15623
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15601
1763A	Absolute Maximization bitmasks, constructive algorithms, greedy, math	800	x15253
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15185
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15168
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x14633
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x14424
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14232
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14207
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14148
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14070
1630A	And Matching bitmasks, constructive algorithms	1500	x14048
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14038
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13928
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13774
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13710
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13579
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13578
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13496
1926D	Vlad and Division bitmasks, greedy	1300	x13395
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13306
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13186
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13125
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x12935
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12558
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12506
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12463
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12400
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12230
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12195
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x11862
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11840
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11827
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11556
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11509
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11311
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11280
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11206
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x10967
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10752
484A	Bits bitmasks, constructive algorithms	1700	x10682
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10678
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10605
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10310
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x9973
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9905
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9874
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x9810
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9766
1775C	Interesting Sequence bitmasks, math	1600	x9622
706D	Vasiliy's Multiset binary search, bitmasks, data structures, trees	1800	x9260
580D	Kefa and Dishes bitmasks, dp	1800	x9159
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9149

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