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.*;
public class Main
{
public static void main(String args[])
{
Scanner in= new Scanner(System.in);
char ch=in.next().charAt(0);
ch=(char)((int)ch+1);
System.out.println(ch);
}
}