import java.util.*;

class Main {

    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next(); //Sringで一文字入力
        char C = S.charAt(0); //Stringをcharに切り出し
        int tmp = (int)C; //文字を10進に変換
        tmp = tmp + 1;
        String hex = Integer.toHexString((int)tmp); //10進を16進文字列に変換
        char hex2 = (char)Integer.parseInt(hex, 16); //16進文字列をcharに変換
        System.out.println(hex2);
    }
}
/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