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

class Main {
    /**
     * ??\?????????????????? / ????????????????????????
     */
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        String line = br.readLine();
        //??????????????¢?????§??????StringBuffer??????????????????
        StringBuffer sb = new StringBuffer(line);
        String answer = sb.reverse().toString();
        
        System.out.println(answer);
    }
}
/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