import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

  public static void main(String[] args) throws IOException {

    BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

    String revStr = "";
    while (input.ready()) {
      char[] str = input.readLine().toCharArray();
      for (char ch : str) {
        revStr = ch + revStr;
      }
      System.out.println(revStr);
    }
  }

}
/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