Problemset - Codeforces

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strings

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Problems

#	Name
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings		x91
1970D1	Arithmancy (Easy) brute force, constructive algorithms, interactive, strings		x318
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings		x1086
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings		x2541
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1316
1952H	Palindrome implementation, strings		x348
1952B	Is it stated? strings		x10257
1952A	Are You a Robot, Again? strings		x11325
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2965
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3413
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11736
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8128
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3251
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x29553
1935A	Entertainment in MAC constructive algorithms, strings	800	x25365
1931A	Recovering a Small String brute force, strings	800	x33464
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2356
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3673
1927B	Following the String constructive algorithms, greedy, strings	900	x30278
1927A	Make it White greedy, strings	800	x39608
1925A	We Got Everything Covered! constructive algorithms, greedy, strings	800	x27107
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12299
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x328
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25852
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19346
1915D	Unnatural Language Processing greedy, implementation, strings	900	x27595
1914A	Problemsolving Log implementation, strings	800	x29616
1913F	Palindromic Problem binary search, data structures, hashing, string suffix structures, strings	2800	x287
1913B	Swap and Delete strings	1000	x21687
1912L	LOL Lovers strings	800	x6311
1909G	Pumping Lemma hashing, strings	3000	x318
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x18342
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x23182
1905C	Largest Subsequence greedy, strings	1400	x11014
1902E	Collapsing Strings data structures, strings, trees	1900	x3734
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x21808
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2041
1898A	Milica and String brute force, implementation, strings	800	x15039
1896B	AB Flipping greedy, strings, two pointers	900	x13343
1894A	Secret Sport implementation, strings	800	x18091
1886C	Decreasing String implementation, strings	1600	x10189
1883B	Chemistry strings	900	x26740
1881A	Don't Try to Count brute force, strings	800	x27337
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15817
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2464
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x14739
1862A	Gift Carpet dp, greedy, implementation, strings	800	x30694
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9443
1860A	Not a Substring constructive algorithms, strings	900	x20780
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5294
1850C	Word on the Paper implementation, strings	800	x40957
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x9822
1847D	Professor Higashikata data structures, dsu, greedy, implementation, strings	1900	x3599
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26054
1845C	Strong Password binary search, dp, greedy, strings	1400	x13311
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11611
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7297
1840A	Cipher Shifer implementation, strings, two pointers	800	x32531
1838D	Bracket Walk data structures, greedy, strings	2100	x3077
1834C	Game with Reversing games, greedy, math, strings	1200	x12626
1833A	Musical Puzzle implementation, strings	800	x31558
1832A	New Palindrome strings	800	x24867
1829A	Love Story implementation, strings	800	x45816
1827C	Palindrome Partition binary search, brute force, data structures, dp, hashing, strings	2600	x1140
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19261
1823D	Unique Palindromes constructive algorithms, math, strings	1900	x3646
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9686
1821E	Rearrange Brackets brute force, dp, greedy, sortings, strings	2100	x2241
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13586
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13369
1820A	Yura's New Name implementation, strings	800	x16344
1817F	Entangled Substrings string suffix structures, strings	3500	x179
1815E	Bosco and Particle dp, math, number theory, strings	3100	x325
1812J	Unmysterious Language *special problem, constructive algorithms, strings		x5791
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13051
1811A	Insert Digit greedy, math, strings	800	x29991
1807C	Find and Replace greedy, implementation, strings	800	x29146
1805B	The String Has a Target greedy, strings	800	x18167
1801G	A task for substrings data structures, string suffix structures, strings	3400	x345
1800F	Dasha and Nightmares bitmasks, hashing, meet-in-the-middle, strings	1900	x3687
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x12031
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12138
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x21669
1800B	Count the Number of Pairs greedy, strings	1000	x23931
1800A	Is It a Cat? implementation, strings	800	x29981
1799C	Double Lexicographically Minimum greedy, strings	1700	x5450
1796B	Asterisk-Minor Template implementation, strings	1000	x16026
1796A	Typical Interview Problem brute force, implementation, strings	800	x18561
1795A	Two Towers brute force, implementation, strings	800	x23228
1794A	Prefix and Suffix Array strings	800	x16546
1791D	Distinct Split brute force, greedy, strings	1000	x26876
1791A	Codeforces Checking implementation, strings	800	x54931
1790A	Polycarp and the Day of Pi implementation, math, strings	800	x35616
1789F	Serval and Brain Power bitmasks, brute force, dp, greedy, implementation, strings	2700	x517
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x15769
1781C	Equal Frequencies brute force, constructive algorithms, greedy, implementation, sortings, strings	1600	x7039
1779A	Hall of Fame constructive algorithms, greedy, strings	800	x22886
1778C	Flexible String bitmasks, brute force, strings	1600	x7650
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x818
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x1953

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