#include <stdio.h>
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
#include <functional>
#include <map>
#include <iomanip>
#include <math.h> 
#include <stack>
#include <queue>
#include <bitset>
#include <cstdlib>
#include <tuple>
#include <cctype>
#include <ctype.h>
#include <set>
#include <sstream>

using namespace std;

int main(){
	int i, j, k;
	long long n;

	cin >> n;

	long long base = 0, num = 0, ama = 0;
	vector<int>list;

	while (true)
	{

		if (n < 7) {
			list.push_back(n);
			break;
		}

		ama = (n % 7);
		n /= 7;
		list.push_back(ama);

		
	}


	for (i = list.size()-1; i >= 0; i--) {
		cout << list[i];
	}
	cout << endl;






	getchar();
	getchar();
	return 0;
}