Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
15:59:51
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bitmasks

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Problems

#	Name
2009F	Firefly's Queries bitmasks, data structures, flows, math	1700	x5364
2002G	Lattice Optimizing bitmasks, brute force, hashing, meet-in-the-middle	3400	x196
1995D	Cases bitmasks, brute force, dp, strings	2300	x2192
1994G	Minecraft bitmasks, brute force, dp, graphs, math	2600	x1154
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x4199
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x15867
1993E	Xor-Grid Problem bitmasks, constructive algorithms, dp, implementation	2700	x468
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x256
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6104
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x15646
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x5907
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x15720
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x203
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x1105
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1499
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5090
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13246
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1182
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6360
1979B	XOR Sequences bitmasks, greedy	1000	x21949
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1758
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17222
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x784
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x202
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x13585
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x316
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1666
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6477
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4354
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x17567
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3795
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1213
1952I	Dark Matter bitmasks, geometry		x531
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4221
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x8926
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x675
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4604
1944B	Equal XOR bitmasks, constructive algorithms	1100	x15934
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x491
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7277
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1333
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1356
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3435
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x958
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x700
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2581
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1655
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1665
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x11646
1926D	Vlad and Division bitmasks, greedy	1300	x15254
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7583
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x13754
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x945
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x41603
1915A	Odd One Out bitmasks, implementation	800	x55942
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x14833
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2383
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1350
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x16617
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x544
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x764
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5626
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12634
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4133
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5982
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1430
1883E	Look Back bitmasks, greedy	1700	x8015
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5395
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15312
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7289
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1174
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x12615
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11653
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1136
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13435
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2333
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14086
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2381
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6915
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16645
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2578
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13389
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1117
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6203
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x203
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1372
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3501
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5789
1849F	XOR Partition binary search, bitmasks, data structures, divide and conquer, greedy, trees	2700	x713
1848F	Vika and Wiki binary search, bitmasks, combinatorics, divide and conquer, dp, math	2400	x1532
1847F	The Boss's Identity binary search, bitmasks, data structures, dfs and similar, greedy, math, sortings	2500	x888
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12813
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19911
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4362
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x716
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x32867
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x651
1842B	Tenzing and Books bitmasks, greedy, math	1100	x16962
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22364
1835F	Good Graph bitmasks, dfs and similar, graph matchings, graphs, implementation	3500	x164

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