Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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bitmasks

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Problems

#	Name
1493F	Enchanted Matrix bitmasks, interactive, number theory	2600	x373
201D	Brand New Problem bitmasks, brute force, dp	2600	x388
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x453
375C	Circling Round Treasures bitmasks, shortest paths	2600	x470
754E	Dasha and cyclic table bitmasks, brute force, fft, strings, trees	2600	x479
1679F	Formalism for Formalism bitmasks, dp, math	2600	x494
1739F	Keyboard Design bitmasks, data structures, dp, string suffix structures, strings	2600	x507
599E	Sandy and Nuts bitmasks, dp, trees	2600	x616
1430G	Yet Another DAG Problem bitmasks, dfs and similar, dp, flows, graphs, math	2600	x620
1004F	Sonya and Bitwise OR bitmasks, data structures, divide and conquer	2600	x691
1530F	Bingo bitmasks, combinatorics, dp, math, probabilities	2600	x746
1398G	Running Competition bitmasks, fft, math, number theory	2600	x760
1500C	Matrix Sorting bitmasks, brute force, constructive algorithms, greedy, two pointers	2600	x762
1569E	Playoff Restoration bitmasks, brute force, hashing, implementation, meet-in-the-middle	2600	x783
1326F1	Wise Men (Easy Version) bitmasks, brute force, dp, meet-in-the-middle	2600	x805
1584F	Strange LCS bitmasks, dp, graphs, greedy, strings	2600	x835
1493E	Enormous XOR bitmasks, constructive algorithms, greedy, math, strings, two pointers	2600	x861
482C	Game with Strings bitmasks, dp, probabilities	2600	x869
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x891
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x892
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x931
724G	Xor-matic Number of the Graph bitmasks, graphs, math, number theory, trees	2600	x992
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1023
1815D	XOR Counting bitmasks, combinatorics, dp, math	2600	x1026
755F	PolandBall and Gifts bitmasks, dp, greedy	2600	x1265
662C	Binary Table bitmasks, brute force, divide and conquer, dp, fft, math	2600	x1938
1208F	Bits And Pieces bitmasks, dfs and similar, dp, greedy	2600	x2091
845F	Guards In The Storehouse bitmasks, dp	2500	x415
152E	Garden bitmasks, dp, graphs, trees	2500	x459
1117F	Crisp String bitmasks, dp	2500	x515
1709F	Multiset of Strings bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees	2500	x528
1673E	Power or XOR? bitmasks, combinatorics, math, number theory	2500	x658
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x700
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x733
1734F	Zeros and Ones bitmasks, divide and conquer, dp, math	2500	x765
1788F	XOR, Tree, and Queries bitmasks, constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, trees	2500	x781
1778E	The Tree Has Fallen! bitmasks, dfs and similar, math, trees	2500	x812
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x830
1498F	Christmas Game bitmasks, data structures, dfs and similar, dp, games, math, trees	2500	x842
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x848
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x884
53E	Dead Ends bitmasks, dp	2500	x898
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x953
1716E	Swap and Maximum Block bitmasks, data structures, dfs and similar, divide and conquer, dp	2500	x1018
333E	Summer Earnings binary search, bitmasks, brute force, geometry, sortings	2500	x1066
1313D	Happy New Year bitmasks, dp, implementation	2500	x1104
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1145
1556F	Sports Betting bitmasks, combinatorics, dp, graphs, math, probabilities	2500	x1158
1097F	Alex and a TV Show bitmasks, combinatorics, number theory	2500	x1213
1779F	Xorcerer's Stones bitmasks, constructive algorithms, dp, trees	2500	x1214
1583F	Defender of Childhood Dreams bitmasks, constructive algorithms, divide and conquer	2500	x1217
1479C	Continuous City bitmasks, constructive algorithms	2500	x1255
1427E	Xum bitmasks, constructive algorithms, math, matrices, number theory	2500	x1258
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1267
734F	Anton and School bitmasks, constructive algorithms, implementation, math	2500	x1277
1438E	Yurii Can Do Everything binary search, bitmasks, brute force, constructive algorithms, divide and conquer, two pointers	2500	x1290
543C	Remembering Strings bitmasks, dp	2500	x1346
1361C	Johnny and Megan's Necklace binary search, bitmasks, constructive algorithms, dfs and similar, dsu, graphs	2500	x1378
1508C	Complete the MST bitmasks, brute force, data structures, dfs and similar, dsu, graphs, greedy, trees	2500	x1417
1665E	MinimizOR bitmasks, brute force, data structures, divide and conquer, greedy, implementation, two pointers	2500	x1420
1550E	Stringforces binary search, bitmasks, brute force, dp, strings, two pointers	2500	x1438
1497D	Genius bitmasks, dp, graphs, number theory	2500	x1480
1327F	AND Segments bitmasks, combinatorics, data structures, dp, two pointers	2500	x1601
1209E2	Rotate Columns (hard version) bitmasks, dp, greedy, sortings	2500	x1845
528D	Fuzzy Search bitmasks, brute force, fft	2500	x2044
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2168
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2183
107C	Arrangement bitmasks, dp	2400	x361
662A	Gambling Nim bitmasks, math, matrices, probabilities	2400	x429
534F	Simplified Nonogram bitmasks, dp, hashing, meet-in-the-middle	2400	x438
354B	Game with Strings bitmasks, dp, games	2400	x448
367D	Sereja and Sets bitmasks, dfs and similar	2400	x616
1163E	Magical Permutation bitmasks, brute force, constructive algorithms, data structures, graphs, math	2400	x644
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x658
441E	Valera and Number bitmasks, dp, math, probabilities	2400	x669
1423J	Bubble Cup hypothesis bitmasks, constructive algorithms, dp, math	2400	x730
913E	Logical Expression bitmasks, dp, shortest paths	2400	x743
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x766
1009G	Allowed Letters bitmasks, flows, graph matchings, graphs, greedy	2400	x767
21D	Traveling Graph bitmasks, graph matchings, graphs	2400	x784
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x808
1146E	Hot is Cold bitmasks, data structures, divide and conquer, implementation	2400	x821
1620G	Subsequences Galore bitmasks, combinatorics, dp	2400	x852
1670F	Jee, You See? bitmasks, combinatorics, dp	2400	x914
1007B	Pave the Parallelepiped bitmasks, brute force, combinatorics, math, number theory	2400	x921
1038E	Maximum Matching bitmasks, brute force, dfs and similar, dp, graphs	2400	x951
744C	Hongcow Buys a Deck of Cards bitmasks, brute force, dp	2400	x1001
780F	Axel and Marston in Bitland bitmasks, dp, graphs, matrices	2400	x1018
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1051
1679E	Typical Party in Dorm bitmasks, combinatorics, dp, strings	2400	x1092
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1134
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1159
1739E	Cleaning Robot bitmasks, dp	2400	x1164
906C	Party bitmasks, brute force, dp, graphs	2400	x1179
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1231
698C	LRU bitmasks, dp, math, probabilities	2400	x1273
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1319
1598F	RBS binary search, bitmasks, brute force, data structures, dp	2400	x1319
1804E	Routing bitmasks, brute force, dfs and similar, dp, graphs	2400	x1354
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1374