#include <bits/stdc++.h>
#include <random>
using namespace std;
//#include <atcoder/all>
//using namespace atcoder;
using ll = long long;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vvvvll = vector<vvvll>;
using vvvvvll = vector<vvvvll>;
using vvvvvvll = vector<vvvvvll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvvb = vector<vvb>;
using vvvvb = vector<vvvb>;
using vd = vector<double>;
using vvd = vector<vd>;
using vvvd = vector<vvd>;
using vvvvd = vector<vvvd>;
using vvvvvd = vector<vvvvd>;
#define all(A) A.begin(),A.end()
#define ALL(A) A.begin(),A.end()
#define rep(i, n) for (ll i = 0; i < (ll) (n); i++)
using pqr = priority_queue<pair<ll, ll>, vector<pair<ll, ll>>, greater<pair<ll, ll>>>;

template<class T>
bool chmax(T& p, T q, bool C = 1) {
    if (C == 0 && p == q) {
        return 1;
    }
    if (p < q) {
        p = q;
        return 1;
    }
    else {
        return 0;
    }
}

template<class T>
bool chmin(T& p, T q, bool C = 1) {
    if (C == 0 && p == q) {
        return 1;
    }
    if (p > q) {
        p = q;
        return 1;
    }
    else {
        return 0;
    }
}

ll gcd(ll(a), ll(b)) {
    if (b == 0)return a;
    ll c = a;
    while (a % b != 0) {
        c = a % b;
        a = b;
        b = c;
    }
    return b;
}


struct dsu {
  public:
    dsu() : _n(0) {}
    dsu(int n) : _n(n), par_size(n, -1) {}

    int merge(int a, int b) {
        int x = leader(a), y = leader(b);
        if (x == y) return x;
        if (-par_size[x] < -par_size[y]) swap(x, y);
        par_size[x] += par_size[y];
        par_size[y] = x;
        return x;
    }
    int merge(pair<ll,ll> p) {
        int a=p.first;
        int b=p.second;
        int x = leader(a), y = leader(b);
        if (x == y) return x;
        if (-par_size[x] < -par_size[y]) swap(x, y);
        par_size[x] += par_size[y];
        par_size[y] = x;
        return x;
    }

    bool same(int a, int b) {
        return leader(a) == leader(b);
    }
    bool same(pair<ll,ll> p) {
        int a=p.first;
        int b=p.second;
        return leader(a) == leader(b);
    }

    int leader(int a) {
        if (par_size[a] < 0) return a;
        return par_size[a] = leader(par_size[a]);
    }

    int size(int a) {
        return -par_size[leader(a)];
    }

    vector<vector<int>> groups() {
        std::vector<int> leader_buf(_n), gr_size(_n);
        for (int i = 0; i < _n; i++) {
            leader_buf[i] = leader(i);
            gr_size[leader_buf[i]]++;
        }
        std::vector<vector<int>> res(_n);
        for (int i = 0; i < _n; i++) {
            res[i].reserve(gr_size[i]);
        }
        for (int i = 0; i < _n; i++) {
            res[leader_buf[i]].push_back(i);
        }
        res.erase(
            remove_if(res.begin(), res.end(),
                           [&](const vector<int>& v) { return v.empty(); }),
            res.end());
        return res;
    }
  private:
    int _n;
    vector<int> par_size;
};

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    ll N;
    cin>>N;
    if(N==0){
        cout<<0<<endl;
        return 0;
    }
    string AN="";
    while(N>0){
        AN=char('0'+N%7)+AN;
        N/=7;
    }
    cout<<AN<<endl;
}