import java.io.PrintStream;
import java.util.Scanner;

class Main {

    public static void main(String[] args) {
        doit(args, new Scanner(System.in), System.out);
    }

    static void doit(String[] args, Scanner scanner, PrintStream out) {
        String str = scanner.next();
        StringBuilder sb = new StringBuilder();
        for (int i = str.length() - 1; i >= 0; i--) {
            sb.append(str.charAt(i));
        }
        out.println(sb.toString());
    }
}
/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