Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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strings

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Problems

#	Name
1051A	Vasya And Password greedy, implementation, strings	1200	x8307
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8472
1023A	Single Wildcard Pattern Matching brute force, implementation, strings	1200	x8503
868A	Bark to Unlock brute force, implementation, strings	900	x8508
747B	Mammoth's Genome Decoding implementation, strings	900	x8527
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x8566
946C	String Transformation greedy, strings	1300	x8757
708A	Letters Cyclic Shift constructive algorithms, greedy, implementation, strings	1200	x8843
864B	Polycarp and Letters brute force, implementation, strings	1000	x8868
490C	Hacking Cypher brute force, math, number theory, strings	1700	x8897
259A	Little Elephant and Chess brute force, strings	1000	x8917
1315B	Homecoming binary search, dp, greedy, strings	1300	x8952
975A	Aramic script implementation, strings	900	x8955
981A	Antipalindrome brute force, implementation, strings	900	x9021
1301C	Ayoub's function binary search, combinatorics, greedy, math, strings	1700	x9042
1554D	Diane constructive algorithms, greedy, strings	1800	x9051
1295B	Infinite Prefixes math, strings	1700	x9066
518A	Vitaly and Strings constructive algorithms, strings	1600	x9105
665C	Simple Strings dp, greedy, strings	1300	x9113
108A	Palindromic Times implementation, strings	1000	x9155
525B	Pasha and String constructive algorithms, greedy, math, strings	1400	x9172
1473D	Program data structures, dp, implementation, strings	1700	x9292
822B	Crossword solving brute force, implementation, strings	1000	x9314
549A	Face Detection implementation, strings	900	x9340
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x9405
1680C	Binary String binary search, greedy, strings, two pointers	1600	x9463
1321C	Remove Adjacent brute force, constructive algorithms, greedy, strings	1600	x9485
1326D2	Prefix-Suffix Palindrome (Hard version) binary search, greedy, hashing, string suffix structures, strings	1800	x9497
616A	Comparing Two Long Integers implementation, strings	900	x9497
385B	Bear and Strings brute force, greedy, implementation, math, strings	1200	x9506
1735C	Phase Shift dfs and similar, dsu, graphs, greedy, implementation, strings	1400	x9538
712B	Memory and Trident implementation, strings	1100	x9601
1822E	Making Anti-Palindromes greedy, math, strings	1600	x9639
554B	Ohana Cleans Up brute force, greedy, strings	1200	x9662
1849C	Binary String Copying binary search, brute force, data structures, hashing, strings	1600	x9765
1105B	Zuhair and Strings brute force, implementation, strings	1100	x9785
548A	Mike and Fax brute force, implementation, strings	1100	x9830
1220C	Substring Game in the Lesson games, greedy, strings	1300	x9888
110B	Lucky String constructive algorithms, strings	1100	x9921
1737A	Ela Sorting Books greedy, implementation, strings	900	x9930
723B	Text Document Analysis expression parsing, implementation, strings	1100	x9988
801B	Valued Keys constructive algorithms, greedy, strings	900	x10001
625B	War of the Corporations constructive algorithms, greedy, strings	1200	x10052
1675E	Replace With the Previous, Minimize dsu, greedy, strings	1500	x10058
94A	Restoring Password implementation, strings	900	x10099
1952B	Is it stated? strings		x10116
1886C	Decreasing String implementation, strings	1600	x10119
989A	A Blend of Springtime implementation, strings	900	x10138
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10207
271D	Good Substrings data structures, strings	1800	x10218
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10224
745A	Hongcow Learns the Cyclic Shift implementation, strings	900	x10289
1096B	Substring Removal combinatorics, math, strings	1300	x10323
559B	Equivalent Strings divide and conquer, hashing, sortings, strings	1700	x10347
844A	Diversity greedy, implementation, strings	1000	x10354
598B	Queries on a String implementation, strings	1300	x10418
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10593
877A	Alex and broken contest implementation, strings	1100	x10684
1251B	Binary Palindromes greedy, strings	1400	x10718
1742F	Smaller constructive algorithms, greedy, strings	1500	x10719
1182B	Plus from Picture dfs and similar, implementation, strings	1300	x10825
63A	Sinking Ship implementation, sortings, strings	900	x10833
755B	PolandBall and Game binary search, data structures, games, greedy, sortings, strings	1100	x10905
1905C	Largest Subsequence greedy, strings	1400	x10935
1316B	String Modification brute force, constructive algorithms, implementation, sortings, strings	1400	x10950
1151A	Maxim and Biology brute force, strings	1000	x10975
1511D	Min Cost String brute force, constructive algorithms, graphs, greedy, strings	1600	x11020
778A	String Game binary search, greedy, strings	1700	x11062
1140B	Good String implementation, strings	1200	x11134
1628B	Peculiar Movie Preferences greedy, strings	1700	x11165
1952A	Are You a Robot, Again? strings		x11183
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11248
1305B	Kuroni and Simple Strings constructive algorithms, greedy, strings, two pointers	1200	x11285
1609B	William the Vigilant implementation, strings	1100	x11493
1307C	Cow and Message brute force, dp, math, strings	1500	x11529
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11574
1326D1	Prefix-Suffix Palindrome (Easy version) hashing, string suffix structures, strings	1500	x11582
1379A	Acacius and String brute force, implementation, strings	1500	x11596
1555D	Say No to Palindromes brute force, constructive algorithms, dp, strings	1600	x11708
776A	A Serial Killer brute force, implementation, strings	900	x11816
1360F	Spy-string bitmasks, brute force, constructive algorithms, dp, hashing, strings	1700	x11819
1187B	Letters Shop binary search, implementation, strings	1300	x11845
165C	Another Problem on Strings binary search, brute force, dp, math, strings, two pointers	1600	x11847
1085A	Right-Left Cipher implementation, strings	800	x11859
1107A	Digits Sequence Dividing greedy, strings	900	x11868
78A	Haiku implementation, strings	800	x11902
721B	Passwords implementation, math, sortings, strings	1100	x11964
1800E2	Unforgivable Curse (hard version) brute force, constructive algorithms, dfs and similar, dsu, graphs, greedy, strings	1500	x11976
1029A	Many Equal Substrings implementation, strings	1300	x11991
1800E1	Unforgivable Curse (easy version) brute force, constructive algorithms, dsu, graphs, greedy, strings	1400	x12088
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12180
1537E1	Erase and Extend (Easy Version) binary search, brute force, dp, greedy, hashing, implementation, string suffix structures, strings, two pointers	1600	x12209
735A	Ostap and Grasshopper implementation, strings	800	x12274
1670B	Dorms War brute force, implementation, strings	1100	x12401
1421C	Palindromifier constructive algorithms, strings	1400	x12468
1295C	Obtain The String dp, greedy, strings	1600	x12536
1834C	Game with Reversing games, greedy, math, strings	1200	x12569
5C	Longest Regular Bracket Sequence constructive algorithms, data structures, dp, greedy, sortings, strings	1900	x12622
554A	Kyoya and Photobooks brute force, math, strings	900	x12688
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x12733