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Competitions

Week 6: December 14 - 20. Char arrays 1

Character replacement

In a string of Latin letters and spaces, replace all letters a with letter b and vice versa.

Input

One string that contains Latin letters and spaces.

Output

Print the updated string.

Time limit 1 second
Memory limit 128 MiB
Input example #1
abrakadabra
Output example #1
barbkbdbarb
Author Matviychuk Sergiy Volodymyrovych
Source "ABC programming"