#include <iostream>
#include <string>
#include <math.h>
using namespace std;
int main()
{
	int N;
	double a = 0;
	string s;
	cin >> N;
	for (int i = 0; N > 0; i++)
	{
		a = a + (N % 7) * pow(10, i);
		N /= 7;
	}
	s = to_string(a);
	for (int i = 0; i < s.size(); i++)
	{
		if (s[i] == '.')
		{
			s.resize(i);
			break;
		}
	}

	cout << s << endl;
	return 0;
}