#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD % 1000000007
using namespace std;
typedef long long LL;
typedef vector<int> VI;


int main() {
	int n;
	cin >> n;
	VI nn(101);
	VI::iterator it = nn.begin();
	while (n) {
		*it = n % 7;
		it++;
		n /= 7;
	}
	do {
		if (it != nn.begin()) it--;
		cout << *it;
	} while (it != nn.begin());
	cout << endl;
	return 0;
}