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.io.*;
import java.util.*;
class Main  {
	public static void main (String[] args) {
		Scanner in=new Scanner(System.in);
		char p=(in.nextLine()).charAt(0);
		int k=((int)p)+1;
		char u=(char)k;
		System.out.print(u);
		
	}
}