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

int main() {
  int x,a,t=0;
  cin >> x;
  if(x==0){cout<< 0 << endl;return(0);}
for (int i=282475249;i>0;i=i/7){
	a=x/i;
  if (((t==0)&&(a > 0))||(t==1)){cout << a;t=1;}
  x=x-i*a;
}
cout<< endl;
return(0);
}