Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
22:47:06
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Problems

#	Name
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4690
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4264
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x2642
1974E	Money Buys Happiness dp	1800	x5736
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x11471
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x12327
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x6599
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11405
1971G	XOUR data structures, dsu, sortings	1400	x7206
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7658
1971E	Find the Car binary search, math, sortings	1500	x10821
1970G1	Min-Fund Prison (Easy) dfs and similar, trees	1900	x862
1970E1	Trails (Easy) dp	1800	x1202
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x911
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1544
1970C1	Game on Tree (Easy) games	1400	x1961
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	x745
1969D	Shop Game data structures, greedy, math, sortings	1900	x3653
1969C	Minimizing the Sum dp, implementation	1700	x6745
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3396
1968F	Equal XOR Segments binary search, data structures	1800	x4341
1968E	Cells Arrangement constructive algorithms	1600	x8534
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12499
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10816
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x10125
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x5478
1965A	Everything Nim games, greedy, math, sortings	1400	x11134
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x206
1958D	Staircase *special problem	1600	x366
1958C	Firewood *special problem	1500	x498
1958B	Clock in the Pool *special problem, math	1400	x673
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3841
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8116
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11196
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3711
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6146
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7497
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x13333
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18612
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5178
1951C	Ticket Hoarding greedy, math, sortings	1400	x9996
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3656
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7897
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12463
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1261
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1318
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x2132
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8398
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14886
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4175
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9433
1945F	Kirill and Mushrooms data structures, sortings	1900	x3690
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x7175
1945D	Seraphim the Owl dp, greedy	1300	x12629
1943A	MEX Game 1 games, greedy	1300	x15804
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5619
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x9837
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5321
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8409
1938H	Pho Restaurant	1600	x1901
1938C	Bit Counting Sequence	1900	x1282
1937B	Binary Path dp, greedy, implementation	1300	x13420
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6693
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7470
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7306
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6149
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9958
1932F	Feed Cats data structures, dp, sortings	1900	x3495
1932E	Final Countdown implementation, math, number theory	1600	x7058
1932D	Card Game greedy, implementation	1400	x10178
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14052
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x7099
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x13693
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16291
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3749
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x6505
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4250
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13523
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x3829
1928C	Physical Education Lesson brute force, math, number theory	1600	x7681
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3884
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x12664
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18716
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3053
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10395
1926D	Vlad and Division bitmasks, greedy	1300	x13949
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3290
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12579
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6055
1923C	Find B constructive algorithms, greedy	1400	x13484
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7162
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5287
1922C	Closest Cities greedy, implementation, math	1300	x17104
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3506
1921E	Eat the Chip brute force, games, greedy, math	1600	x9045
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5172
1920C	Partitioning the Array brute force, math, number theory	1600	x12052
1919C	Grouping Increases data structures, dp, greedy	1400	x17097
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4343
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12786

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