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(); 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); } } }