#include<bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
typedef long long LL;
LL N;
vector<int>v;
int main(){
	cin>>N;
	if(N==0){
	   cout<<0<<endl;
	}else{
	   while(N!=0){
	      v.push_back(N%7);
	      N/=7;
	   }
	   reverse(v.begin(),v.end());
	   REP(i,v.size()){
	       cout<<v[i];
	   }
	   cout<<endl;
	}
	return(0);
}