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.*;
public class Main
{
  public static void main(String args[])
  {
      Scanner sc = new Scanner(System.in);
      char c = sc.next().charAt(0);
      int x = (int)(c);
      System.out.println((char)(x+1));
  }
}