import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		sc.close();

		StringBuilder sb = new StringBuilder();
		boolean flg = false;
		for (int i = 0; i < s.length; i++) {
			if (!flg && '0' <= s[i] && s[i] <= '9') {
				sb.reverse();
				flg = true;
			}
			sb.append(s[i]);
		}
		System.out.println(sb.toString());
	}
}