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Refact.ai Match 1 (Codeforces Round 985)
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bitmasks

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Problems

#	Name
2036G	Library of Magic binary search, bitmasks, constructive algorithms, divide and conquer, interactive, number theory		x562
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers		x2315
2035C	Alya and Permutation bitmasks, constructive algorithms, math	1400	x7055
2027E2	Bit Game (Hard Version) bitmasks, dp, math	3100	x37
2027E1	Bit Game (Easy Version) bitmasks, brute force, games, math	2800	x104
2026E	Best Subsequence bitmasks, dfs and similar, flows, graph matchings, graphs		x906
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x2875
2020C	Bitwise Balancing bitmasks, hashing, implementation, math, schedules, ternary search	1400	x12094
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x21465
2009F	Firefly's Queries bitmasks, data structures, flows, math	1700	x6334
2002G	Lattice Optimizing bitmasks, brute force, hashing, meet-in-the-middle	3400	x208
1995D	Cases bitmasks, brute force, dp, strings	2300	x2330
1994G	Minecraft bitmasks, brute force, dp, graphs, math	2600	x1248
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x4447
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16428
1993E	Xor-Grid Problem bitmasks, constructive algorithms, dp, implementation	2700	x534
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x501
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6619
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x16202
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x6249
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x16488
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x209
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x1185
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1584
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5305
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13680
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1236
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6575
1979B	XOR Sequences bitmasks, greedy	1000	x22501
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1841
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17592
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x821
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x222
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14027
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x334
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1768
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6697
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4485
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x17921
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3917
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1253
1952I	Dark Matter bitmasks, geometry		x538
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4380
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9151
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x695
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4731
1944B	Equal XOR bitmasks, constructive algorithms	1100	x16215
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x512
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7469
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1361
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1389
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3522
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x977
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x714
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2638
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1695
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1716
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12018
1926D	Vlad and Division bitmasks, greedy	1300	x15617
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7768
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14127
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x973
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x42571
1915A	Odd One Out bitmasks, implementation	800	x57952
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15131
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2510
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1381
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17294
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x583
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x785
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5776
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12892
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4268
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6107
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1486
1883E	Look Back bitmasks, greedy	1700	x8192
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5558
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15539
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7512
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1192
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x13054
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11845
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1157
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13878
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2387
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14251
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2420
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7066
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16836
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2664
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13590
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1146
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6330
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x204
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1426
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3570
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5917
1849F	XOR Partition binary search, bitmasks, data structures, divide and conquer, greedy, trees	2700	x729
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1630
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x904

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