Problemset - Codeforces

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Problems

#	Name
1860A	Not a Substring constructive algorithms, strings	900	x20796
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x20273
855A	Tom Riddle's Diary brute force, implementation, strings	800	x20138
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x19842
1428C	ABBB brute force, data structures, greedy, strings	1100	x19665
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x19462
1729C	Jumping on Tiles constructive algorithms, strings	1100	x19435
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19404
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19270
1616B	Mirror in the String greedy, strings	1100	x19095
1301A	Three Strings implementation, strings	800	x19059
1291A	Even But Not Even greedy, math, strings	900	x19047
1368B	Codeforces Subsequences brute force, constructive algorithms, greedy, math, strings	1500	x19041
1682A	Palindromic Indices greedy, strings	800	x19024
1451B	Non-Substring Subsequence dp, greedy, implementation, strings	900	x19004
1144A	Diverse Strings implementation, strings	800	x18843
1251A	Broken Keyboard brute force, strings, two pointers	1000	x18817
1167A	Telephone Number brute force, greedy, strings	800	x18784
1660C	Get an Even String dp, greedy, strings	1300	x18778
1796A	Typical Interview Problem brute force, implementation, strings	800	x18565
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18381
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x18378
1216A	Prefixes strings	800	x18377
1037C	Equalize dp, greedy, strings	1300	x18318
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18221
1805B	The String Has a Target greedy, strings	800	x18171
676C	Vasya and String binary search, dp, strings, two pointers	1500	x18136
1894A	Secret Sport implementation, strings	800	x18104
1594C	Make Them Equal brute force, greedy, math, strings	1200	x17921
988B	Substrings Sort sortings, strings	1100	x17853
126B	Password binary search, dp, hashing, string suffix structures, strings	1700	x17804
1284A	New Year and Naming implementation, strings	800	x17769
1536B	Prinzessin der Verurteilung brute force, constructive algorithms, strings	1200	x17727
1560D	Make a Power of Two greedy, math, strings	1300	x17652
1304B	Longest Palindrome brute force, constructive algorithms, greedy, implementation, strings	1100	x17438
1466C	Canine poetry dp, greedy, strings	1300	x17310
672B	Different is Good constructive algorithms, implementation, strings	1000	x17058
1669E	2-Letter Strings data structures, math, strings	1200	x16912
1111A	Superhero Transformation implementation, strings	1000	x16578
1794A	Prefix and Suffix Array strings	800	x16551
1139A	Even Substrings implementation, strings	800	x16459
1820A	Yura's New Name implementation, strings	800	x16350
1605C	Dominant Character brute force, greedy, implementation, strings	1400	x16336
1624D	Palindromes Coloring binary search, greedy, sortings, strings	1400	x16264
186A	Comparing Strings implementation, strings	1100	x16228
1093B	Letters Rearranging constructive algorithms, greedy, sortings, strings	900	x16172
1535C	Unstable String binary search, dp, greedy, implementation, strings, two pointers	1400	x16095
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16091
1796B	Asterisk-Minor Template implementation, strings	1000	x16038
202A	LLPS binary search, bitmasks, brute force, greedy, implementation, strings	800	x15878
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15836
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x15792
43B	Letter implementation, strings	1100	x15716
1278A	Shuffle Hashing brute force, implementation, strings	1000	x15715
918B	Radio Station implementation, strings	900	x15687
1332C	K-Complete Word dfs and similar, dsu, greedy, implementation, strings	1500	x15667
448B	Suffix Structures implementation, strings	1400	x15655
706C	Hard problem dp, strings	1600	x15638
501B	Misha and Changing Handles data structures, dsu, strings	1100	x15618
1257C	Dominated Subarray greedy, implementation, sortings, strings, two pointers	1200	x15597
1027A	Palindromic Twist implementation, strings	1000	x15553
1654B	Prefix Removals strings	800	x15476
1201A	Important Exam implementation, strings	900	x15314
1451C	String Equality dp, greedy, hashing, implementation, strings	1400	x15212
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15100
1898A	Milica and String brute force, implementation, strings	800	x15055
1189A	Keanu Reeves strings	800	x15046
1073A	Diverse Substring implementation, strings	1000	x14883
1404A	Balanced Bitstring implementation, strings	1500	x14776
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x14752
1008A	Romaji implementation, strings	900	x14736
1243B1	Character Swap (Easy Version) strings	1000	x14562
1223B	Strings Equalization strings	1000	x14434
1038A	Equality implementation, strings	800	x14418
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x14410
1673B	A Perfectly Balanced String? brute force, greedy, strings	1100	x14285
1748B	Diverse Substrings brute force, implementation, strings	1400	x14229
1348C	Phoenix and Distribution constructive algorithms, greedy, sortings, strings	1600	x14189
831B	Keyboard Layouts implementation, strings	800	x14066
1178B	WOW Factor dp, strings	1300	x13978
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x13940
525A	Vitaliy and Pie greedy, hashing, strings	1100	x13868
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x13825
701C	They Are Everywhere binary search, strings, two pointers	1500	x13771
1821C	Tear It Apart brute force, implementation, math, strings	1300	x13599
1155A	Reverse a Substring implementation, sortings, strings	1000	x13530
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x13396
1896B	AB Flipping greedy, strings, two pointers	900	x13374
1553D	Backspace dp, greedy, strings, two pointers	1500	x13341
1845C	Strong Password binary search, dp, greedy, strings	1400	x13330
1812A	Are You a Robot? special problem, special problem, *special problem, expression parsing, strings		x13056
1194C	From S To T implementation, strings	1300	x12908
1551C	Interesting Story greedy, sortings, strings	1500	x12894
1185B	Email from Polycarp implementation, strings	1200	x12889
1076A	Minimizing the String greedy, strings	1200	x12838
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x12756
554A	Kyoya and Photobooks brute force, math, strings	900	x12722
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x12675
1834C	Game with Reversing games, greedy, math, strings	1200	x12644
1295C	Obtain The String dp, greedy, strings	1600	x12553