
import java.io.PrintStream;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		char ch;
		Scanner s = new Scanner(System.in);
		ch = s.next().charAt(0);
		int i = (int)ch + 1;
		ch = (char)i;
		PrintStream p = new PrintStream(System.out);  
		p.print(ch);
	}
}
/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