import java.io.*;

public class Main {

	public static void main(String[] args) throws IOException{
		// TODO 自動生成されたメソッド・スタブ
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		char[] str = br.readLine().toCharArray();
		
		for(int i = str.length - 1; i >= 0; i--){
			System.out.print(str[i]);
		}
		System.out.print('\n');
	}

}

/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