import java.util.Scanner;
import java.io.InputStreamReader;
import java.io.BufferedReader;
 
class Main {
    
    public static void main(String[] args) {
        Scanner in = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        String s = in.nextLine(); // Scanner has functions to read ints, longs, strings, chars, etc.

        System.out.println((char) (s.charAt(0) + 1));
    }
}
/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