#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <stack>
#include <algorithm>
#include <string>
#include <map>
#include <iterator>
#include <set>
#include <queue>
#include <bitset>
#include <cassert>

using namespace std;

int main() {


    int N;
    cin >> N;
    string s;
    while (N > 6) {
        s += to_string(N%7);
        N = N/7;
    }
    s += to_string(N);
    reverse(s.begin(),s.end());
    cout << s << endl;

    return 0;

}