#include <bits/stdc++.h>
#define PI 3.14159265359
using namespace std;

int main() {
	int N;
	cin >> N;

	if (!N) {
		cout << 0 << endl;
		return 0;
	}

	vector<int> v;
	while (1) {
		int n = N % 7;
		v.push_back(n);
		N /= 7;

		if (N < 7) {
			v.push_back(N);
			break;
		}
	}

	while (1) {
		if (v.at(v.size() - 1) == 0) {
			v.pop_back();
		}
		else {
			break;
		}
	}

	reverse(v.begin(), v.end());
	
	for (int i = 0; i < v.size(); i++) {
		cout << v.at(i);
		if (i == v.size() - 1) {
			cout << endl;
		}
	}
}