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 lector=new Scanner (System.in);
		String a= lector.nextLine();
		char s= a.charAt(0);
		s=(char) (s+1);
		System.out.print (s);
	}
}
