import java.util.*;
public class Main{
  public static void main(String [] args){
    Scanner sc = new Scanner(System.in);
    String input = sc.next();
    String output;
    char [] str = input.toCharArray();
    char con;
    for(int i = 0;i < str.length / 2;i++){
      con = str[i];
      str[i] = str[str.length - 1 - i];
      str[str.length - 1 - i] = con;
    }
    System.out.println(String.valueOf(str));
  }
}
/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