
import java.io.*;
import java.util.*;
class Main  {
	public static void main (String[] args) {
		Scanner in=new Scanner(System.in);
		char p=(in.nextLine()).charAt(0);
		int k=((int)p)+1;
		char u=(char)k;
		System.out.print(u);
		
	}
}
/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