Problemset - Codeforces

Problems

#	Name
2218G	The 67th Iteration of "Counting is Fun" implementation, math	1800	x3312
2211C2	Equal Multisets (Hard Version) constructive algorithms, dsu, greedy	1800	x3553
2209D	Ghostfires constructive algorithms, greedy	1800	x5196
2208D1	Tree Orientation (Easy Version) constructive algorithms, dfs and similar, dsu, graphs, greedy, matrices, trees	1800	x4101
2206H	Reflect Sort number theory	1800	x789
2204E	Sum of Digits (and Again) brute force, constructive algorithms, math	1800	x4698
2199D	Two Arrays *special problem, math	1800	x271
2196C1	Interactive Graph (Simple Version) binary search, combinatorics, dfs and similar, dp, graphs, interactive	1800	x3557
2192D	Cost of Tree dp, greedy, trees, trees	1800	x3497
2189C2	XOR-convenience (Hard Version) bitmasks, constructive algorithms, math	1800	x6168
2187B	Shortest Statement Ever bitmasks, constructive algorithms, dp, greedy	1800	x5222
2185G	Mixing MEXes data structures, implementation, math	1800	x3261
2184E	Exquisite Array combinatorics, data structures, dsu, sortings	1800	x5701
2182E	New Year's Gifts binary search, data structures, greedy, sortings, two pointers	1800	x5530
2179E	Blackslex and Girls constructive algorithms, geometry, math	1800	x5744
2176D	Fibonacci Paths data structures, dp, graphs, sortings	1800	x5719
2172B	Buses greedy, sortings	1800	x2120
2164D	Copy String greedy, implementation, strings, two pointers	1800	x4935
2155D	Batteries brute force, constructive algorithms, graph matchings, graphs, interactive, math	1800	x5839
2153D	Not Alone dp, greedy	1800	x6269
2148F	Gravity Falls greedy, implementation, sortings	1800	x6560
2145D	Inversion Value of a Permutation constructive algorithms, dfs and similar, dp	1800	x6650
2144D	Price Tags brute force, dp, math	1800	x6979
2143D1	Inversion Graph Coloring (Easy Version) combinatorics, data structures, dp, greedy, two pointers	1800	x6373
2141D	Avoid Minimums *special problem, greedy, math	1800	x470
2141C	Minimum on Subarrays *special problem, brute force	1800	x342
2138C1	Maple and Tree Beauty (Easy Version) brute force, dfs and similar, dp, graphs, trees	1800	x5403
2127D	Root was Built by Love, Broken by Destiny combinatorics, dfs and similar, graphs, trees	1800	x6168
2121F	Yamakasi binary search, brute force, data structures, greedy, two pointers	1800	x8088
2120D	Matrix game combinatorics, math	1800	x5734
2117F	Wildflower combinatorics, dfs and similar, trees	1800	x5915
2106E	Wolf binary search, greedy, math	1800	x5914
2101B	Quartet Swapping brute force, data structures, divide and conquer, greedy, sortings	1800	x6766
2093F	Hackers and Neural Networks bitmasks, brute force, greedy	1800	x5864
2092D	Mishkin Energizer brute force, constructive algorithms, greedy, implementation, strings	1800	x6836
2091F	Igor and Mountain binary search, brute force, dp	1800	x6145
2081A	Math Division bitmasks, dp, math, probabilities	1800	x4065
2079D	Cute Subsequences *special problem, sortings	1800	x679
2078D	Scammy Game Ad dp, greedy, implementation	1800	x6493
2071D1	Infinite Sequence (Easy Version) bitmasks, brute force, dp, implementation, math	1800	x6650
2069D	Palindrome Shuffle binary search, greedy, hashing, strings, two pointers	1800	x7014
2045M	Mirror Maze brute force, dfs and similar, graphs, implementation	1800	x2215
2043D	Problem about GCD brute force, flows, math, number theory	1800	x7650
2042C	Competitive Fishing greedy	1800	x8624
2039C2	Shohag Loves XOR (Hard Version) bitmasks, brute force, math, number theory	1800	x4961
2035D	Yet Another Real Number Problem binary search, data structures, divide and conquer, greedy, implementation, math	1800	x5817
2033F	Kosuke's Sloth brute force, math, number theory	1800	x7110
2032D	Genokraken constructive algorithms, data structures, graphs, greedy, implementation, interactive, trees, two pointers	1800	x6185
2025D	Attribute Checks brute force, data structures, dp, implementation, math, two pointers	1800	x7859
2022C	Gerrymandering dp, implementation	1800	x6368
2020D	Connect the Dots brute force, dp, dsu, graphs, math, trees	1800	x7400
2014E	Rendez-vous de Marian et Robin dfs and similar, graphs, shortest paths	1800	x8676
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x6654
2006B	Iris and the Tree brute force, data structures, dfs and similar, dsu, math, trees	1800	x4342
2005C	Lazy Narek dp, implementation, strings	1800	x8659
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x10264
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x7701
1987D	World is Mine dp, games	1800	x8684
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x6334
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x7843
1974E	Money Buys Happiness dp	1800	x11249
1970E1	Trails (Easy) dp	1800	x3421
1968F	Equal XOR Segments binary search, data structures	1800	x6911
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x8098
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x8697
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x8023
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x2750
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x7379
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x10633
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x9756
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4845
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x8342
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x9074
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x9642
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x4183
1910D	Remove and Add *special problem, greedy	1800	x407
1907F	Shift and Reverse greedy, sortings	1800	x5989
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x5678
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x7524
1870D	Prefix Purchase greedy, implementation, sortings	1800	x8022
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x6869
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x7586
1861D	Sorting By Multiplication dp, greedy	1800	x7941
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x7985
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x6417
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x5451
1852A	Ntarsis' Set binary search, math, number theory	1800	x9213
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x7378
1848C	Vika and Price Tags math, number theory	1800	x7156
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3712
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x8491
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x8994
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x6335
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x9049
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x6371
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x5985
1809D	Binary String Sorting constructive algorithms, greedy	1800	x7265
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x8944
1801B	Buying gifts data structures, greedy, sortings	1800	x7530
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x7123