#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;

vector<ll> numeral_7(ll n){
  vector<ll> answer;
  if(n==0){
    answer.push_back(0);
    return answer;
  }
  while(n>0){
    answer.push_back(n%7);
    n/=7;
  }
  return answer;
}

void solve() {
  ll n;
  cin>>n;
  vector<ll> a=numeral_7(n);
  for(ll i=a.size()-1;i>=0;i--){
    cout<<a.at(i)<<(i==0?"\n":"");
  }
} 

int main() { solve();system("pause"); }