import java.util.Scanner;
class Main
{
  public static void main(String[] atry)
  {
    Scanner sc=new Scanner(System.in);
    char ch=sc.next().charAt(0);
    int i=(int)ch;
    i++;
    System.out.println((char)i);
  }
}
/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