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

public class Main {
	public static void main(String[] args) throws IOException {
    Scanner sc = new Scanner(System.in);
    char c = sc.next().charAt(0);
    c++; 
    System.out.println(c) ;
   }
}
/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