#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream> 
#include<map>
#include <iomanip>
#include <time.h>
#include <random>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
using namespace std;
#define LONG_INF 10000000000000000
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)
int main() {
	long long n;
	cin >> n;
	if (n == 0) {
		cout << 0 << endl;
		return 0;
	}
	string s;
	while (n != 0) {
		s.push_back('0' + n % 7);
		n /= 7;
	}
	reverse(s.begin(), s.end());
	cout << s << endl;
	return 0;
}