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

#define ll long long
#define pii pair<int, int>
#define piii pair<pii, int>
#define pll pair<ll, ll>
#define plll pair<pll, ll>
#define fi first
#define se second
const int N = 2e5 + 5, M = 1e6 + 5;
const int inf = 1e9, mod = 998244353;
const ll INF = 1e18;

namespace ARIS0_0{
	int n; 
	
	void init(){
	}
	void solve(){
		cin >> n;
		
		vector <int> v;
		while (n){
			v.push_back(n % 7);
			n /= 7;
		}
		
		reverse(v.begin(), v.end());
		for (auto i : v) cout << i;
		cout << "\n";
	}
	void single(){ init(), solve(); }
	void multi(){ init(); int T; cin >> T; while (T -- ) solve(); }
	void idmulti(){ init(); int id, T; cin >> id >> T; while (T -- ) solve(); }
};

signed main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	ARIS0_0::single();
}

/*



*/