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.Scanner;

public class Main{

	public static void main(String[] args) {
		Scanner sc = new Scanner (System.in);
		
		char []c = sc.next().toCharArray();
		
		c[0]++;
		
		System.out.println(c[0]);
		

	}

}
