import java.util.Scanner;

public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		String str;
		Scanner scan = new Scanner(System.in);
		str = scan.nextLine();
		StringBuilder sb = new StringBuilder();
		for (int i = str.length() - 1; i >= 0; i--) {
			sb.append(str.charAt(i));
		}
		String str2 = new String(sb);
		System.out.println(str2);
	}
}
/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