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

}
}