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Problems

Strings
Difficulty
Sort by
73
Phibonachies’ Numbers
Very easy
185
Orcs of the Future
Easy
205
First non-palindrome
Easy
274
Type printer
Medium
300
Apocalyptic Alignment
Hard
329
Number of words
Easy
330
Word the champion
Medium
331
The offer the champion
Easy
332
The children`s railway
Medium
333
Children's Railway - 2
Hard
346
Progress in artillery continues
Medium
440
Counterfeit check
Easy
463
Incorrect addition
Very easy
470
Super palindromes
Very easy
486
Inexact string
Very hard
493
Decomposition
Easy
494
AEIOUY
506
New compiler
Very easy
526
Funny Language
Very hard
550
Playfair Cipher
589
A-function from a string
Very easy
627
Unloved digits
Easy
670
Searching for Palindromes
Very easy
725
AntiGray
Very easy
837
Permutations
Very easy
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