Problemset - Codeforces

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Codeforces Round (Div. 3)
39:35:09
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bitmasks

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Problems

#	Name
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6544
1760G	SlavicG's Favorite Problem bitmasks, dfs and similar, graphs	1700	x6858
1883E	Look Back bitmasks, greedy	1700	x6993
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7025
1217C	The Number Of Good Substrings binary search, bitmasks, brute force	1700	x7087
1051D	Bicolorings bitmasks, dp	1700	x7118
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7266
1543D1	RPD and Rap Sheet (Easy Version) bitmasks, constructive algorithms, interactive, math	1700	x7431
1340B	Nastya and Scoreboard bitmasks, dp, graphs, greedy	1700	x7568
1592C	Bakry and Partitioning bitmasks, constructive algorithms, dfs and similar, dp, graphs, trees	1700	x7590
1332D	Walk on Matrix bitmasks, constructive algorithms, math	1700	x7810
1557C	Moamen and XOR bitmasks, combinatorics, dp, math, matrices	1700	x8315
1731C	Even Subarrays bitmasks, brute force, hashing, math, number theory	1700	x8905
484A	Bits bitmasks, constructive algorithms	1700	x10676
1368D	AND, OR and square sum bitmasks, greedy, math	1700	x11201
1516C	Baby Ehab Partitions Again bitmasks, constructive algorithms, dp, math	1700	x11503
1325D	Ehab the Xorcist bitmasks, constructive algorithms, greedy, number theory	1700	x11535
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11836
1554B	Cobb bitmasks, brute force, greedy, math	1700	x12393
276D	Little Girl and Maximum XOR bitmasks, dp, greedy, implementation, math	1700	x12925
291C	Network Mask *special problem, bitmasks, brute force, implementation	1600	x1664
243A	The Brand New Function bitmasks	1600	x3782
244B	Undoubtedly Lucky Numbers bitmasks, brute force, dfs and similar	1600	x4366
812B	Sagheer, the Hausmeister bitmasks, brute force, dp	1600	x5069
878A	Short Program bitmasks, constructive algorithms	1600	x5265
1778C	Flexible String bitmasks, brute force, strings	1600	x7633
913C	Party Lemonade bitmasks, dp, greedy	1600	x7739
1801A	The Very Beautiful Blanket bitmasks, constructive algorithms	1600	x8094
1225C	p-binary bitmasks, brute force, math	1600	x8640
1658D1	388535 (Easy Version) bitmasks, math	1600	x8746
1775C	Interesting Sequence bitmasks, math	1600	x9612
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x9964
1151B	Dima and a Bad XOR bitmasks, brute force, constructive algorithms, dp	1600	x10675
1567C	Carrying Conundrum bitmasks, combinatorics, dp, math	1600	x11824
1632C	Strange Test binary search, bitmasks, brute force, dp, math	1600	x12227
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13495
114B	PFAST Inc. bitmasks, brute force, graphs	1500	x3519
868C	Qualification Rounds bitmasks, brute force, constructive algorithms, dp	1500	x4520
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6274
224B	Array bitmasks, implementation, two pointers	1500	x7147
437B	The Child and Set bitmasks, greedy, implementation, sortings	1500	x9144
1742G	Orray bitmasks, brute force, greedy, math, sortings	1500	x9794
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9838
1614C	Divan and bitwise operations bitmasks, combinatorics, constructive algorithms, dp, math	1500	x9900
1722G	Even-Odd XOR bitmasks, constructive algorithms, greedy	1500	x10299
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x11832
1646C	Factorials and Powers of Two bitmasks, brute force, constructive algorithms, dp, math	1500	x13115
1630A	And Matching bitmasks, constructive algorithms	1500	x14047
1516B	AGAGA XOOORRR bitmasks, brute force, dp, greedy	1500	x18028
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18296
1600J	Robot Factory bitmasks, dfs and similar	1400	x3771
961C	Chessboard bitmasks, brute force, implementation	1400	x5217
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10747
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x10945
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12189
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12446
1270C	Make Good bitmasks, constructive algorithms, math	1400	x13575
1513B	AND Sequences bitmasks, combinatorics, constructive algorithms, math	1400	x13703
1494B	Berland Crossword bitmasks, brute force, greedy, implementation	1400	x13923
1790E	Vlad and a Pair of Numbers bitmasks, constructive algorithms	1400	x14129
1634B	Fortune Telling bitmasks, math	1400	x15613
1095C	Powers Of Two bitmasks, greedy	1400	x15697
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15808
1362C	Johnny and Another Rating Drop bitmasks, greedy, math	1400	x16985
1463B	Find The Array bitmasks, constructive algorithms, greedy	1400	x18717
550B	Preparing Olympiad bitmasks, brute force	1400	x19425
27B	Tournament bitmasks, brute force, dfs and similar, greedy	1300	x5134
1152B	Neko Performs Cat Furrier Transform bitmasks, constructive algorithms, dfs and similar, math	1300	x8800
611B	New Year and Old Property bitmasks, brute force, implementation	1300	x9763
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10598
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11310
1775B	Gardener and the Array bitmasks, constructive algorithms	1300	x12491
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12553
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13160
1926D	Vlad and Division bitmasks, greedy	1300	x13358
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x13560
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14217
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x14392
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x15177
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x15990
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x16052
1669H	Maximal AND bitmasks, greedy, math	1300	x16107
1661B	Getting Zero bitmasks, brute force, dfs and similar, dp, graphs, greedy, shortest paths	1300	x16946
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x28975
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11268
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13299
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13734
743B	Chloe and the sequence binary search, bitmasks, constructive algorithms, implementation	1200	x14204
1042B	Vitamins bitmasks, brute force, dp, implementation	1200	x15155
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x17280
1362B	Johnny and His Hobbies bitmasks, brute force	1200	x18326
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x22684
1420B	Rock and Lever bitmasks, math	1200	x23572
1097B	Petr and a Combination Lock bitmasks, brute force, dp	1200	x26524
1202A	You Are Given Two Binary Strings... bitmasks, greedy	1100	x8803
1944B	Equal XOR bitmasks, constructive algorithms	1100	x13999
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x14628
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15581
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15781
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17127