Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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bitmasks

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Problems

#	Name
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1442
1242C	Sum Balance bitmasks, dfs and similar, dp, graphs	2400	x1465
1401F	Reverse and Swap binary search, bitmasks, data structures	2400	x1469
1826E	Walk the Runway bitmasks, brute force, data structures, dp, graphs, implementation, sortings	2400	x1493
1592E	Bored Bakry bitmasks, greedy, math, two pointers	2400	x1541
1720D2	Xor-Subsequence (hard version) bitmasks, data structures, dp, strings, trees	2400	x1723
1114F	Please, another Queries on Array? bitmasks, data structures, divide and conquer, math, number theory	2400	x1808
1609E	William The Oblivious bitmasks, data structures, dp, matrices	2400	x1835
1469E	A Bit Similar bitmasks, brute force, hashing, string suffix structures, strings, two pointers	2400	x1849
1257F	Make Them Similar bitmasks, brute force, hashing, meet-in-the-middle	2400	x1926
959F	Mahmoud and Ehab and yet another xor task bitmasks, dp, math, matrices	2400	x1936
1523D	Love-Hate bitmasks, brute force, dp, probabilities	2400	x2075
1709E	XOR Tree bitmasks, data structures, dfs and similar, dsu, greedy, trees	2400	x2424
449D	Jzzhu and Numbers bitmasks, combinatorics, dp	2400	x4054
212B	Polycarpus is Looking for Good Substrings bitmasks, hashing, implementation	2300	x321
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x849
429C	Guess the Tree bitmasks, constructive algorithms, dp, greedy, trees	2300	x900
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x903
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1083
327E	Axis Walking bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle	2300	x1340
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1366
1548D1	Gregor and the Odd Cows (Easy) bitmasks, geometry, math, number theory	2300	x1426
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1471
1411E	Poman Numbers bitmasks, greedy, math, strings	2300	x1553
1245F	Daniel and Spring Cleaning bitmasks, brute force, combinatorics, dp	2300	x1715
1093G	Multidimensional Queries bitmasks, data structures	2300	x1820
1625D	Binary Spiders bitmasks, data structures, implementation, math, sortings, trees	2300	x1963
1705E	Mark and Professor Koro binary search, bitmasks, brute force, combinatorics, data structures, greedy	2300	x1977
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2191
1476E	Pattern Matching bitmasks, data structures, dfs and similar, graphs, hashing, sortings, strings	2300	x2238
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2373
1658D2	388535 (Hard Version) bitmasks, brute force, data structures, math	2300	x2430
547C	Mike and Foam bitmasks, combinatorics, dp, math, number theory	2300	x2700
1451E2	Bitwise Queries (Hard Version) bitmasks, constructive algorithms, interactive, math	2300	x2824
451E	Devu and Flowers bitmasks, combinatorics, number theory	2300	x3212
1316E	Team Building bitmasks, dp, greedy, sortings	2300	x3432
888G	Xor-MST bitmasks, constructive algorithms, data structures	2300	x3871
903F	Clear The Matrix bitmasks, dp	2200	x623
71E	Nuclear Fusion bitmasks, dp	2200	x668
279D	The Minimum Number of Variables bitmasks, dp	2200	x685
385D	Bear and Floodlight bitmasks, dp, geometry	2200	x794
868D	Huge Strings bitmasks, brute force, dp, implementation, strings	2200	x890
225D	Snake bitmasks, dfs and similar, graphs, implementation	2200	x911
377C	Captains Mode bitmasks, dp, games	2200	x1102
757D	Felicity's Big Secret Revealed bitmasks, dp	2200	x1267
425B	Sereja and Table bitmasks, greedy	2200	x1280
850C	Arpa and a game with Mojtaba bitmasks, dp, games	2200	x1368
1741G	Kirill and Company bitmasks, brute force, dfs and similar, dp, flows, graphs, shortest paths	2200	x1409
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1439
1117E	Decypher the String bitmasks, chinese remainder theorem, constructive algorithms, interactive, math	2200	x1442
1659E	AND-MEX Walk bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2200	x1456
743E	Vladik and cards binary search, bitmasks, brute force, dp	2200	x1469
1789D	Serval and Shift-Shift-Shift bitmasks, brute force, constructive algorithms, implementation	2200	x1561
1105E	Helping Hiasat bitmasks, brute force, dp, meet-in-the-middle	2200	x1586
855E	Salazar Slytherin's Locket bitmasks, dp	2200	x1606
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1663
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1670
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1681
1194E	Count The Rectangles bitmasks, brute force, data structures, geometry, sortings	2200	x1729
1622E	Math Test bitmasks, brute force, greedy	2200	x1829
1615D	X(or)-mas Tree bitmasks, dfs and similar, dsu, graphs, trees	2200	x1836
678E	Another Sith Tournament bitmasks, dp, math, probabilities	2200	x1896
875D	High Cry binary search, bitmasks, combinatorics, data structures, divide and conquer	2200	x1967
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x1991
1168C	And Reachability bitmasks, dp	2200	x2321
1234F	Yet Another Substring Reverse bitmasks, dp	2200	x2355
707D	Persistent Bookcase bitmasks, data structures, dfs and similar, implementation	2200	x2592
1238E	Keyboard Purchase bitmasks, dp	2200	x2725
1215E	Marbles bitmasks, dp	2200	x2909
1338C	Perfect Triples bitmasks, brute force, constructive algorithms, divide and conquer, math	2200	x2958
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3311
282E	Sausage Maximization bitmasks, data structures, trees	2200	x3341
1438D	Powerful Ksenia bitmasks, constructive algorithms, math	2200	x4058
11D	A Simple Task bitmasks, dp, graphs	2200	x4421
165E	Compatible Numbers bitmasks, brute force, dfs and similar, dp	2200	x6161
570D	Tree Requests binary search, bitmasks, constructive algorithms, dfs and similar, graphs, trees	2200	x6620
342D	Xenia and Dominoes bitmasks, dfs and similar, dp	2100	x487
400E	Inna and Binary Logic binary search, bitmasks, data structures	2100	x931
1725F	Field Photography bitmasks, data structures, sortings	2100	x933
111C	Petya and Spiders bitmasks, dp, dsu	2100	x1262
993C	Careful Maneuvering bitmasks, brute force, geometry	2100	x1478
1185F	Two Pizzas bitmasks, brute force	2100	x1799
333D	Characteristics of Rectangles binary search, bitmasks, brute force, implementation, sortings	2100	x1844
431D	Random Task binary search, bitmasks, combinatorics, dp, math	2100	x2103
1787E	The Harmonization of XOR bitmasks, constructive algorithms, greedy, math	2100	x2169
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2260
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2338
1732C2	Sheikh (Hard Version) binary search, bitmasks, brute force, greedy, implementation, two pointers	2100	x2451
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2459
1185G1	Playlist for Polycarp (easy version) bitmasks, combinatorics, dp	2100	x2551
768E	Game of Stones bitmasks, dp, games	2100	x2626
1748D	ConstructOR bitmasks, chinese remainder theorem, combinatorics, constructive algorithms, math, number theory	2100	x2653
1166E	The LCMs Must be Large bitmasks, brute force, constructive algorithms, math, number theory	2100	x2662
525E	Anya and Cubes binary search, bitmasks, brute force, dp, math, meet-in-the-middle	2100	x2722
1466F	Euclid's nightmare bitmasks, dfs and similar, dsu, graphs, greedy, math, sortings	2100	x2786
766E	Mahmoud and a xor trip bitmasks, constructive algorithms, data structures, dfs and similar, dp, math, trees	2100	x2802
1605D	Treelabeling bitmasks, constructive algorithms, dfs and similar, games, greedy, implementation, trees	2100	x2831
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3008
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3234
1446C	Xor Tree binary search, bitmasks, data structures, divide and conquer, dp, trees	2100	x3383