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;

class Main {
	public static void main(String... args) {
		Scanner scan = new Scanner(System.in);
		System.out.println((char)(scan.next().codePointAt(0) + 1));
	}
}
