#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;cin>>n;
  if(n==0){
    cout<<0<<endl;
    return 634;
  }
  bool a=0;
  int m=pow(7,10);
  while(m!=0){
    if(n/m!=0){cout<<n/m;a=1;}
    else if(a)cout<<0;
    n=n%m;
    m/=7;
  }
  cout<<endl;
}