import java.io.*;
import java.util.ArrayList;
import java.util.Collections;

class Main {
    public static void main(String[] args) throws IOException {
	    	BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            String str = reader.readLine();
            StringBuffer sb = new StringBuffer(str);
            System.out.println(sb.reverse());
    }
}
/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