Letter substitution
Problem
Enter a character string from the keyboard and replace all letters in it with «a» to "b" and all the letters "b" to "a" (uppercase to uppercase, lowercase to lowercase).
Input
The first line is a string without spaces.
Imprint
You need to output the modified string.
Examples
| # |
Input |
Output |
| 1 |
aabbAABBccCC
|
bbaaBBAAccCC |