Given is a lowercase English letter C that is not `z`. Print the letter that follows C in alphabetical order.

Constraints

* C is a lowercase English letter that is not `z`.

Input

Input is given from Standard Input in the following format:


C


Output

Print the letter that follows C in alphabetical order.

Examples

Input

a


Output

b


Input

y


Output

z
import java.util.*;

class Main {

    public static void main(String args[]){
        Main main = new Main();
    }

    public Main(){
        Scanner S = new Scanner(System.in);
        char C = S.next().charAt(0);
        C++;
        System.out.println(C);
    }

}
