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Problem set. String Algorithms Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1102
Strange Dialog
Tetrahedron Team Online Contest May 2001
2863
176
1158
Censored!
NEERC 2001 Northern Subregional
1008
501
1177
Like Comparisons
USU Personal Contest 2002
401
1245
1269
Obscene Words Filter
USU Championship 2003
610
842
1297
Palindrome
Spring School Contest 2004
6362
82
1354
Palindrome. Again Palindrome
Spring School Contest 2005
3813
138
1393
Average Common Prefix
447
1153
1423
String Tale
Timus Top Coders: First Challenge
3037
170
1486
Equal Squares
USU Championship 2006
787
622
1517
Freedom of Choice
Timus Top Coders: Third Challenge
2023
241
1590
Bacon’s Cipher
NEERC 2007 Eastern Subregional
2463
186
1677
Monkey at the Keyboard
Petrozavodsk Summer 2008. USU Contest
263
1548
1684
Jack's Last Word
USU Personal Contest 2009
1562
266
1706
Cipher Message 2
Ural Championship 2009
605
676
1713
Key Substrings
NEERC 2009 Eastern Subregional
624
632
1723
Sandro's Book
Ural Regional School Programming Contest 2009
6399
62
1732
Ministry of Truth
USU Championship 2009
862
457
1799
Sasha and swag strings
44
4562
1835
Swamp Doctor
Ural Championship 2011
103
3158
1842
Local Roots
Petrozavodsk Summer 2010. USU Contest
51
5679
1937
Davy Jones’s Organ
Ural FU Championship 2012
250
1217
1954
Five Palindromes
Petrozavodsk Winter 2013. Ural FU Contest
74
3588
1960
Palindromes and Super Abilities
Petrozavodsk Winter 2013. Ural FU Contest
686
433
2040
Palindromes and Super Abilities 2
Petrozavodsk Summer 2014. Ural FU Contest
302
855
2044
31 Palindromes
Petrozavodsk Summer 2014. Ural FU Contest
96
2516
2045
Richness of words
Petrozavodsk Summer 2014. Ural FU Contest
552
475
2057
Non-palidromic cutting
Palindromic Contest
64
3396
2058
100500 palidnromes
Palindromic Contest
138
1698
2059
Not common palindromes
Palindromic Contest
158
1496
2060
Subpalindrome pairs
Palindromic Contest
379
646
2061
OEIS A216264
Palindromic Contest
66
3307
2077
Reductions
NEERC 2015 Eastern Subregional Qualifier
27
6409
2118
Cipher Message 4
Petrozavodsk Summer 2018. umnik_team contest
112
1362
2131
Open Cup
Later is better than never
23
4901
2137
Dynamic string complexity
Later is better than never
23
4901
2168
Runes in the Field
Ural School Programming Contest 2022
17
3051
2193
Old Barabarian Rap
ICPC Ural Regional Contest Qualifier 2022
28
1437
2197
Work is not a wolf; a wolf is to walk
ICPC Ural Regional Contest Qualifier 2024
21
1766
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