Problemset - Codeforces

Problems

#	Name
2039C2	Shohag Loves XOR (Hard Version) bitmasks, brute force, math, number theory		x2171
2038D	Divide OR Conquer bitmasks, data structures, dp, implementation	2400	x431
2037G	Natlan Exploring bitmasks, combinatorics, data structures, dp, math, number theory	2000	x1911
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers	1900	x3282
2035C	Alya and Permutation bitmasks, constructive algorithms, math	1400	x7936
2029H	Message Spread bitmasks, brute force, combinatorics, dp	3500	x41
2028F	Alice's Adventures in Addition bitmasks, brute force, dp, implementation	2700	x297
2027E2	Bit Game (Hard Version) bitmasks, dp, math	3100	x48
2027E1	Bit Game (Easy Version) bitmasks, brute force, games, math	2800	x127
2026E	Best Subsequence bitmasks, dfs and similar, flows, graph matchings, graphs	2500	x1097
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x2988
2020C	Bitwise Balancing bitmasks, hashing, implementation, math, schedules, ternary search	1400	x14386
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x21844
2009F	Firefly's Queries bitmasks, data structures, flows, math	1700	x6523
2002G	Lattice Optimizing bitmasks, brute force, hashing, meet-in-the-middle	3400	x215
1995D	Cases bitmasks, brute force, dp, strings	2300	x2367
1994G	Minecraft bitmasks, brute force, dp, graphs, math	2600	x1277
1994E	Wooden Game bitmasks, greedy, math, trees	2000	x4522
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16572
1993E	Xor-Grid Problem bitmasks, constructive algorithms, dp, implementation	2700	x545
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x505
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6682
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x16401
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x6330
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x16627
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x212
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x1209
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1602
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5369
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13778
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1257
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6666
1979B	XOR Sequences bitmasks, greedy	1000	x22667
1977D	XORificator bitmasks, brute force, greedy, hashing	2300	x1872
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17693
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x836
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x232
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14167
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x350
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1784
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6775
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4550
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x18019
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3954
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1267
1952I	Dark Matter bitmasks, geometry		x539
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4432
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9242
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x701
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4773
1944B	Equal XOR bitmasks, constructive algorithms	1100	x16297
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x519
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7526
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1383
1934D2	XOR Break --- Game Version bitmasks, games, greedy, interactive	2400	x1408
1934D1	XOR Break --- Solo Version bitmasks, constructive algorithms, greedy	2100	x3561
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x987
1930F	Maximize the Difference bitmasks, brute force, dfs and similar	2700	x725
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2661
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1722
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1732
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12100
1926D	Vlad and Division bitmasks, greedy	1300	x15739
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7813
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14217
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x979
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x42875
1915A	Odd One Out bitmasks, implementation	800	x58590
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15214
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2570
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1414
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17475
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x608
1903D2	Maximum And Queries (hard version) bitmasks, divide and conquer, dp, greedy	2500	x794
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5833
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12965
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4326
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6143
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1504
1883E	Look Back bitmasks, greedy	1700	x8241
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5597
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15615
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7571
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1202
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x13192
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11910
1874B	Jellyfish and Math bitmasks, brute force, dfs and similar, dp, graphs, shortest paths	2400	x1161
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13998
1870E	Another MEX Problem bitmasks, brute force, dp, shortest paths	2300	x2409
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14320
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2437
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7096
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16878
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2677
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13651
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1159
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6372
1861F	Four Suits binary search, bitmasks, flows, greedy	3200	x206
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1440
1854B	Earn or Unlock bitmasks, brute force, dp	2200	x3591

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