Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
2011E	Rock-Paper-Scissors Bot *special problem, greedy, strings		x185
2010C2	Message Transmission Error (hard version) hashing, string suffix structures, strings, two pointers	1700	x4896
2010C1	Message Transmission Error (easy version) brute force, strings	1400	x9576
2008E	Alternating String brute force, data structures, dp, greedy, implementation, strings	1500	x14319
2008B	Square or Not brute force, math, strings	800	x33496
2005C	Lazy Narek dp, implementation, strings	1800	x8956
2003C	Turtle and Good Pairs constructive algorithms, greedy, sortings, strings	1200	x22301
2003A	Turtle and Good Strings greedy, strings	800	x33186
2000C	Numeric String Template data structures, strings	1000	x32479
2000A	Primary Task implementation, math, strings	800	x45374
1999D	Slavic's Exam greedy, implementation, strings	1100	x33614
1997A	Strong Password brute force, implementation, strings	800	x34065
1996C	Sort dp, greedy, sortings, strings	1200	x28871
1995D	Cases bitmasks, brute force, dp, strings	2300	x3100
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x784
1992E	Novice's Mistake brute force, constructive algorithms, implementation, math, strings	1700	x11098
1989B	Substring and Subsequence brute force, greedy, strings	1200	x23811
1985A	Creating Words implementation, strings	800	x75951
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x4020
1980G	Yasya and the Mysterious Tree bitmasks, data structures, dfs and similar, graphs, greedy, strings, trees	2300	x1833
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x8076
1976A	Verify Password implementation, sortings, strings	800	x33144
1975H	378QAQ and Core greedy, strings	3500	x223
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x365
1974B	Symmetric Encoding implementation, sortings, strings	800	x35187
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x31398
1971B	Different String implementation, strings	800	x46220
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x349
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings	2100	x991
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x2760
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x5587
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x2521
1952H	Palindrome *special problem, implementation, strings		x819
1952B	Is it stated? *special problem, strings		x12401
1952A	Are You a Robot, Again? *special problem, strings		x14221
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x4690
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x6568
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x17979
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x13130
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x4741
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x40269
1935A	Entertainment in MAC constructive algorithms, strings	800	x30717
1931A	Recovering a Small String brute force, strings	800	x40570
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x3174
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4969
1927B	Following the String constructive algorithms, greedy, strings	900	x38968
1927A	Make it White greedy, strings	800	x53001
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x31516
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x17240
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x552
1922A	Tricky Template constructive algorithms, implementation, strings	800	x29129
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x41051
1915D	Unnatural Language Processing greedy, implementation, strings	900	x36061
1914A	Problemsolving Log implementation, strings	800	x35925
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x687
1913B	Swap and Delete strings	1000	x59074
1912L	LOL Lovers strings	800	x8872
1909G	Pumping Lemma hashing, strings	3000	x735
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x23824
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x31524
1905C	Largest Subsequence greedy, strings	1400	x14615
1902E	Collapsing Strings data structures, strings, trees	1900	x6136
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x76154
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2851
1898A	Milica and String brute force, implementation, strings	800	x17617
1896B	AB Flipping greedy, strings, two pointers	900	x19122
1894A	Secret Sport implementation, strings	800	x20619
1886C	Decreasing String implementation, strings	1600	x18043
1883B	Chemistry strings	900	x68054
1881A	Don't Try to Count brute force, strings	800	x68882
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x18899
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x3171
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x16881
1862A	Gift Carpet dp, greedy, implementation, strings	800	x36893
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x12626
1860A	Not a Substring constructive algorithms, strings	900	x23881
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x7945
1850C	Word on the Paper implementation, strings	800	x55628
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x12873
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x4362
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x29217
1845C	Strong Password binary search, dp, greedy, strings	1400	x17367
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x14048
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x9329
1840A	Cipher Shifer implementation, strings, two pointers	800	x39253
1838D	Bracket Walk data structures, greedy, strings	2100	x3822
1834C	Game with Reversing games, greedy, math, strings	1200	x15393
1833A	Musical Puzzle implementation, strings	800	x35608
1832A	New Palindrome strings	800	x29745
1829A	Love Story implementation, strings	800	x74700
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1817
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x21045
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x4393
1822E	Making Anti-Palindromes greedy, math, strings	1600	x12720
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2809
1821C	Tear It Apart brute force, implementation, math, strings	1300	x16592
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x25656
1820A	Yura's New Name implementation, strings	800	x17845
1817F	Entangled Substrings string suffix structures, strings	3500	x445
1815E	Bosco and Particle dp, math, number theory, strings	3100	x500

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