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

class Main {
    final private static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    final private static StringBuilder sb = new StringBuilder();

    public static void main(final String[] args) throws IOException {
        final String line = in.readLine();
        
        for (int i = line.length() - 1;  0 <= i; --i) {
            sb.append(line.charAt(i));
        }
        System.out.println(sb);
    }
}
/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