#include <iostream>
#include <vector>
using namespace std;

int main()
{
	auto n = 1000000;
	while (cin >> n)
	{
		vector<int> r(0);
		while (n)
		{
			r.push_back(n % 8);
			n /= 8;
		}
		for (auto i = r.rbegin(); i != r.rend(); i++)
		{
			cout << *i;
		}
		cout << endl;
	}
	return 0;
}