Problemset - Codeforces

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Codeforces Round 997 (Div. 2)
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Problems

#	Name
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10710
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6257
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x15310
1974C	Beautiful Triple Pairs combinatorics, data structures	1400	x16274
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x8624
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x14520
1971G	XOUR data structures, dsu, sortings	1700	x9615
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x10481
1971E	Find the Car binary search, math, sortings	1500	x14957
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x3011
1970C1	Game on Tree (Easy) games	1400	x3715
1969C	Minimizing the Sum dp, implementation	1700	x9178
1968E	Cells Arrangement constructive algorithms	1600	x10781
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x15350
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x13763
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x12941
1965A	Everything Nim games, greedy, math, sortings	1400	x14232
1958D	Staircase *special problem	1600	x552
1958C	Firewood *special problem	1500	x776
1958B	Clock in the Pool *special problem, math	1400	x955
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x10024
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x13358
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x8925
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x15953
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x21868
1951C	Ticket Hoarding greedy, math, sortings	1400	x12126
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9550
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x15060
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x3601
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x9773
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x17517
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x11427
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x8496
1945D	Seraphim the Owl dp, greedy	1300	x15042
1943A	MEX Game 1 games, greedy	1300	x18645
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x6306
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x11302
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x10111
1938H	Pho Restaurant	1600	x2231
1937B	Binary Path dp, greedy, implementation	1300	x15491
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x7707
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x7096
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x11729
1932E	Final Countdown implementation, math, number theory	1600	x8588
1932D	Card Game greedy, implementation	1400	x11857
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x16315
1931F	Chat Screenshots combinatorics, dfs and similar, graphs	1700	x8378
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x16891
1931D	Divisible Pairs combinatorics, math, number theory	1300	x20203
1930C	Lexicographically Largest binary search, constructive algorithms, data structures, greedy, sortings	1700	x7323
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x15441
1928C	Physical Education Lesson brute force, math, number theory	1600	x8905
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x14555
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x22796
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12587
1926D	Vlad and Division bitmasks, greedy	1300	x16098
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x14462
1923C	Find B constructive algorithms, greedy	1400	x15812
1922C	Closest Cities greedy, implementation, math	1300	x19136
1921E	Eat the Chip brute force, games, greedy, math	1600	x10104
1920C	Partitioning the Array brute force, math, number theory	1600	x14446
1919C	Grouping Increases data structures, dp, greedy	1400	x20210
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14530
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10845
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8866
1915F	Greetings data structures, divide and conquer, sortings	1500	x14794
1915E	Romantic Glasses data structures, greedy, math	1300	x23534
1914E2	Game with Marbles (Hard Version) games, greedy, sortings	1400	x12934
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x12692
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15498
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x659
1910B	Security Guard *special problem, greedy	1600	x695
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x11619
1907E	Good Triples brute force, combinatorics, number theory	1600	x10964
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x15399
1906M	Triangle Construction greedy, math	1700	x2879
1905C	Largest Subsequence greedy, strings	1400	x12740
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x7147
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x14465
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x6005
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x12532
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x14323
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7292
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x12470
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11971
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x8049
1899E	Queue Sort greedy, implementation, sortings	1300	x16074
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13939
1898C	Colorful Grid constructive algorithms	1700	x5740
1898B	Milena and Admirer greedy, math	1500	x12450
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x6004
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x10052
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11608
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x9175
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12780
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x14237
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7615
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13664
1886C	Decreasing String implementation, strings	1600	x12183
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x6336