import java.io.*;
import java.util.*;


public class Main_yukicoder499 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int n = sc.nextInt();

		if (n == 0) {
			pr.println(0);
			return;
		}

		StringBuilder ret = new StringBuilder();
		while (n > 0) {
			ret.append((char)('0' + n % 7));
			n /= 7;
		}

		pr.println(ret.reverse());
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);

		solve();

		pr.close();
		sc.close();
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}