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);
    char c=sc.next().charAt(0);
    int d=c+1;
    char ans=(char)d;
    System.out.println(ans);    
  }
}
