#include <iostream>
#include <math.h>

using namespace std;

long long n, num = 0, ans = 0, box = 0, b2 = 0;

int main(){
	cin >> n;

	while (n >= pow(7, num)){
		num++;
	}

	for (int i = num; i >= 0; i--){
		box = pow(7, i);

		b2 = n / box;
		if (n >= box){
			ans += b2 * pow(10, i);
		}
		n = n % box;
	}

	cout << ans << endl;

	return 0;
}