import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
String str = sc.nextLine();
char[] arr = str.toCharArray();
for(int start = 0,end = arr.length - 1;start <= end;start++,end--){
char temp = arr[start];
arr[start] = arr[end];
arr[end] = temp;
}
for(int i = 0;i < arr.length;i ++){
System.out.print(arr[i]);
}
}
}
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