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 ch = (char)( ((int)sc.next().charAt(0)) + 1 );

    System.out.println(ch);

  }
}
