import java.util.Scanner;
public class Main {
	public static void main (String args[]) {
		Scanner lector=new Scanner (System.in);
		String a= lector.nextLine();
		char s= a.charAt(0);
		s=(char) (s+1);
		System.out.print (s);
	}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz