#include<iostream>
#include<string>
#include<algorithm>
#include<map>
#include<set>
#include<utility>
#include<vector>
#include<cmath>
#include<cstdio>
#define loop(i,a,b) for(int i=a;i<b;i++) 
#define rep(i,a) loop(i,0,a)
#define pb push_back
#define mp make_pair
#define it ::iterator
#define all(in) in.begin(),in.end()
const double PI=acos(-1);
const double ESP=1e-10;
using namespace std;
string a[8]={"0","1","2","3","5","7","8","9"};
string func(int in){
  if(!in)return "0";
  else {
    string out="";
    while(in){
      out=a[in%8]+out;
      in/=8;
    }
    return out;
  }
}  
int main(){
  int in;
  while(cin>>in,in){
    cout<<func(in)<<endl;
  }
}