import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;
class Main{
    public static void main(String args[]){
	try{
	    InputStreamReader is = new InputStreamReader(System.in);
	    BufferedReader br = new BufferedReader(is);
	    String str = br.readLine();
	    char[] cary = str.toCharArray();
	    for(int i=(cary.length-1);i>=0;i--){
		System.out.print(cary[i]);
	    }
	    System.out.print("\n");

	}
	catch(Exception e){
	    System.exit(0);
	}
    }
}
/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