import java.util.*;
import java.lang.*;
import java.io.*;

class Main {
    public static void main (String[] args)  {
        Scanner in = new Scanner(System.in);
        char input = in.next().charAt(0);
        int integerInput = input;
        integerInput++;
        char output= (char) integerInput;
        System.out.print(output);

    }
}
/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