Problemset - Codeforces

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Educational Codeforces Round 173 (Rated for Div. 2)
38:01:35
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Problems

#	Name
2052F	Fix Flooded Floor constructive algorithms, dp, graphs	1700	x953
2050G	Tree Destruction dfs and similar, dp, trees	1900	x2947
2050E	Three Strings dp, implementation, strings	1500	x8286
2050C	Uninteresting Number brute force, dp, math	1200	x15676
2041C	Cube bitmasks, dfs and similar, dp	2000	x1108
2038L	Bridge Renovation brute force, dp, greedy, math, two pointers	1400	x4581
2037G	Natlan Exploring bitmasks, combinatorics, data structures, dp, math, number theory	2000	x2408
2037E	Kachina's Favorite Binary String dp, greedy, interactive, two pointers	1600	x5237
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers	1900	x3617
2033D	Kousuke's Assignment data structures, dp, dsu, greedy, math	1300	x13690
2033C	Sakurako's Field Trip dp, greedy, two pointers	1400	x13328
2031D	Penchick and Desert Rabbit binary search, data structures, dfs and similar, dp, dsu, greedy, implementation, two pointers	1700	x6584
2029C	New Rating binary search, data structures, dp, greedy	1700	x5274
2028D	Alice's Adventures in Cards constructive algorithms, data structures, dp, graphs, greedy, implementation, ternary search	2000	x2660
2028C	Alice's Adventures in Cutting Cake binary search, dp, greedy, two pointers	1600	x6879
2027D1	The Endspeaker (Easy Version) binary search, dp, graphs, greedy, implementation, two pointers	1700	x5041
2027C	Add Zeros brute force, data structures, dfs and similar, dp, graphs, greedy	1500	x9657
2026D	Sums of Segments binary search, data structures, dp, implementation, math	1900	x4249
2025D	Attribute Checks brute force, data structures, dp, implementation, math, two pointers	1800	x6126
2023B	Skipping binary search, dp, graphs, shortest paths	1700	x5198
2022C	Gerrymandering dp, implementation	1800	x4109
2020E	Expected Power bitmasks, dp, math, probabilities	2000	x3086
2020D	Connect the Dots brute force, dp, dsu, graphs, math, trees	1800	x5805
2018B	Speedbreaker binary search, data structures, dp, greedy, implementation, two pointers	1900	x4092
2014F	Sheriff's Defense dfs and similar, dp, greedy, trees	2000	x3698
2008E	Alternating String brute force, data structures, dp, greedy, implementation, strings	1500	x10313
2005C	Lazy Narek dp, implementation, strings	1800	x7191
2000F	Color Rows and Columns dp, greedy, implementation, math	1900	x5494
1999E	Triple Operations dp, implementation, math	1300	x19224
1997D	Maximize the Root binary search, dfs and similar, dp, greedy, trees	1500	x12824
1996C	Sort dp, greedy, sortings, strings	1200	x23474
1994C	Hungry Games binary search, dp, two pointers	1600	x11033
1992G	Ultra-Meow combinatorics, dp, math	2000	x3205
1992F	Valuable Cards brute force, dp, greedy, number theory, two pointers	1900	x5858
1992D	Test of Love dp, greedy, implementation	1200	x20777
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x6423
1989D	Smithing Skill brute force, data structures, dp, greedy, math, sortings, two pointers	1900	x6079
1988D	The Omnipotent Monster Killer brute force, dfs and similar, dp, trees	2000	x5032
1987D	World is Mine dp, games	1800	x7278
1987C	Basil's Garden dp, greedy	1200	x17697
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x15462
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x7557
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x17037
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x18116
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6744
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x3898
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6865
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10564
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6168
1974E	Money Buys Happiness dp	1800	x8227
1970E2	Trails (Medium) dp, matrices	2000	x1360
1970E1	Trails (Easy) dp	1800	x2341
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x1654
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x2914
1969C	Minimizing the Sum dp, implementation	1700	x9018
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x4369
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4601
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x9893
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x4004
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4660
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7260
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6350
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4542
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1836
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x17305
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x11217
1945D	Seraphim the Owl dp, greedy	1300	x14846
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x9978
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x18764
1937B	Binary Path dp, greedy, implementation	1300	x15333
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8371
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x19350
1932F	Feed Cats data structures, dp, sortings	1900	x4284
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4219
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4917
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x22372
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3708
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12339
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x27514
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3745
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x14270
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x4033
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3989
1919C	Grouping Increases data structures, dp, greedy	1400	x19703
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4935
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x4234
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x22983
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2658
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x122
1906E	Merge Not Sort constructive algorithms, dp	1900	x1660
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4246
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7205
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4369
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11846
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11482
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3375
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x6263
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5649
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x7222
1881E	Block Sequence dp	1500	x15142

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