Problemset - Codeforces

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Codeforces Round 977 (Div. 2)
2 days
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Problems

#	Name
2020B	Brightness Begins binary search, math	1200	x12310
2019B	All Pairs Segments implementation, math	1200	x11340
2014C	Robin Hood in Town binary search, greedy, math	1100	x18231
2009C	The Legend of Freya the Frog implementation, math	1100	x23411
2008D	Sakurako's Hobby dp, dsu, graphs, math	1100	x17961
2005B2	The Strict Teacher (Hard Version) binary search, greedy, math, sortings	1200	x15538
2004C	Splitting Items games, greedy, sortings	1100	x22279
2003C	Turtle and Good Pairs constructive algorithms, greedy, sortings, strings	1200	x17222
2002C	Black Circles brute force, geometry, greedy, math	1200	x14354
2000D	Right Left Wrong greedy, implementation, two pointers	1200	x21795
1999E	Triple Operations dp, implementation, math	1300	x17632
1999D	Slavic's Exam greedy, implementation, strings	1100	x25710
1997C	Even Positions constructive algorithms, data structures, greedy	1100	x21164
1997B	Make Three Regions constructive algorithms, two pointers	1100	x19958
1996C	Sort dp, greedy, sortings, strings	1200	x21955
1995B1	Bouquet (Easy Version) binary search, brute force, greedy, sortings, two pointers	1100	x17331
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16082
1993B	Parity and Sum constructive algorithms, greedy	1100	x21991
1992D	Test of Love dp, greedy, implementation	1200	x19826
1991C	Absolute Zero constructive algorithms, greedy, math	1300	x13876
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x15820
1990B	Array Craft constructive algorithms, greedy	1200	x15932
1989B	Substring and Subsequence brute force, greedy, strings	1200	x19584
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x15987
1987C	Basil's Garden dp, greedy	1200	x16855
1986C	Update Queries data structures, greedy, sortings	1100	x22368
1985E	Secret Box brute force, combinatorics, math	1200	x19486
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x16115
1984B	Large Addition implementation, math	1100	x17843
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x15708
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x16972
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x16524
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x13399
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x18170
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x18361
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x14547
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17350
1976B	Increase/Decrease/Copy greedy, implementation	1100	x21868
1975C	Chamo and Mocha's Array binary search, brute force, greedy	1200	x14218
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x13716
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x25410
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x14629
1966B	Rectangle Filling constructive algorithms, implementation	1100	x14743
1958A	1-3-5 *special problem, dp	1100	x1885
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x17689
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x20863
1954C	Long Multiplication greedy, math, number theory	1200	x19091
1954B	Make It Ugly implementation, math	1200	x18273
1951B	Battle Cows binary search, data structures, greedy	1200	x14351
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x22893
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x16571
1948B	Array Fix brute force, dp, greedy, implementation	1100	x22684
1946B	Maximum Sum dp, greedy, math	1100	x20175
1945D	Seraphim the Owl dp, greedy	1300	x14227
1945C	Left and Right Houses brute force	1200	x14726
1944B	Equal XOR bitmasks, constructive algorithms	1100	x16035
1943A	MEX Game 1 games, greedy	1300	x17642
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x10825
1942B	Bessie and MEX constructive algorithms, math	1100	x13743
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x18226
1937B	Binary Path dp, greedy, implementation	1300	x14852
1935B	Informatics in MAC constructive algorithms	1200	x18334
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x18665
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20030
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22440
1932B	Chaya Calendar number theory	1100	x20544
1931D	Divisible Pairs combinatorics, math, number theory	1300	x18616
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x17218
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x21195
1926D	Vlad and Division bitmasks, greedy	1300	x15371
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x26333
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x19877
1923B	Monsters Attack! dp, greedy, implementation	1100	x17577
1922C	Closest Cities greedy, implementation, math	1300	x18352
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x20501
1921D	Very Different Array data structures, greedy, sortings, two pointers	1100	x21479
1920B	Summation Game games, greedy, math, sortings	1100	x20669
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x22061
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x17731
1915E	Romantic Glasses data structures, greedy, math	1300	x21471
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x21528
1914C	Quests greedy, math	1100	x23870
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x14923
1910A	Username *special problem, implementation	1100	x1766
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x16841
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x20105
1905B	Begginer's Zelda greedy, trees	1100	x16334
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x15293
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12734
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13681
1902B	Getting Points binary search, brute force, greedy	1100	x14367
1901B	Chip and Ribbon greedy, math	1100	x14947
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11455
1899E	Queue Sort greedy, implementation, sortings	1300	x15418
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13482
1899C	Yarik and Array dp, greedy, two pointers	1100	x21024
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x20564
1891B	Deja Vu brute force, math, sortings	1100	x17926
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13115
1886B	Fear of the Dark binary search, geometry, math	1200	x16129

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