Derek really likes string manipulations, but he is having trouble finding the index of a certain character in his string.
He wants to find the occurrence of the character.
Output the index of that character.
The first line will contain the two integers, and .
The second line will contain a string of length lowercase, latin characters.
It is guaranteed that the character will appear at least times.
On the first line, output the zero-based index of the occurrence of the character in the string.
Sample Input 1
1 2 abca
Sample Output 1
Sample Input 2
5 1 ababbbbbbbbbb
Sample Output 2