#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include <sstream>
#include<iomanip>
#include <ctype.h>
using namespace std;

//#include<bits/stdc++.h>



int main() {
	
	long long int a;
	cin >> a;
	long long int p = 0;
	long long int w = 1;
	while (a ) {

		p += (a % 7)*w;
		w *= 10;
		a /= 7;

	}
	cout << p << endl;

	return 0;
}