Problemset - Codeforces

Problems

#	Name
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x16689
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x8245
1983C	Have Your Cake and Eat It Too binary search, brute force, greedy, implementation	1400	x12604
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7184
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	x13774
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3760
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10564
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14351
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x18659
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6665
1978D	Elections data structures, greedy, implementation, math	1600	x11359
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x15009
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6787
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10429
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6072
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3589
1974E	Money Buys Happiness dp	1800	x8082
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x14874
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x15837
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x8410
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14166
1971G	XOUR data structures, dsu, sortings	1700	x9320
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x10063
1971E	Find the Car binary search, math, sortings	1500	x14385
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x1362
1970E1	Trails (Easy) dp	1800	x2228
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x1595
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x2781
1970C1	Game on Tree (Easy) games	1400	x3509
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x1161
1969D	Shop Game data structures, greedy, math, sortings	1900	x4658
1969C	Minimizing the Sum dp, implementation	1700	x8830
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x4308
1968F	Equal XOR Segments binary search, data structures	1800	x5546
1968E	Cells Arrangement constructive algorithms	1600	x10486
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x15003
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x13364
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x12550
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6773
1965A	Everything Nim games, greedy, math, sortings	1400	x13816
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x257
1958D	Staircase *special problem	1600	x534
1958C	Firewood *special problem	1500	x731
1958B	Clock in the Pool *special problem, math	1400	x906
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4548
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x9739
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x12984
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4581
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7165
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x8700
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x15556
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x21390
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6242
1951C	Ticket Hoarding greedy, math, sortings	1400	x11743
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4429
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9239
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x14551
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1889
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1798
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x3356
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x9528
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x17036
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4772
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x11060
1945F	Kirill and Mushrooms data structures, sortings	1900	x4269
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x8267
1945D	Seraphim the Owl dp, greedy	1300	x14582
1943A	MEX Game 1 games, greedy	1300	x18126
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x6207
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x11051
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x6102
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x9801
1938H	Pho Restaurant	1600	x2178
1938C	Bit Counting Sequence	1900	x1486
1937B	Binary Path dp, greedy, implementation	1300	x15159
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7526
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8323
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8268
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6871
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11349
1932F	Feed Cats data structures, dp, sortings	1900	x4207
1932E	Final Countdown implementation, math, number theory	1600	x8324
1932D	Card Game greedy, implementation	1400	x11587
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x15934
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x8175
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x16199
1931D	Divisible Pairs combinatorics, math, number theory	1300	x19296
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4166
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x7176
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4860
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x15101
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4330
1928C	Physical Education Lesson brute force, math, number theory	1600	x8687
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x4462
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x14204
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x21893
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3652
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12096
1926D	Vlad and Division bitmasks, greedy	1300	x15734