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.*;

class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String d = sc.next();
char[] c = d.toCharArray();
int f =c[0];
f++;
char a = (char)f;
System.out.println(a);
}
}
