#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <cmath>

#define FORR(i,b,e) for(int i=(b);i<(int)(e);++i)
#define FOR(i,e) FORR(i,0,e)
#define ALL(c) begin(c), end(c)
#define sortuniq(v) sort(v.begin(), v.end()), v.erase(unique(v.begin(),v.end()),v.end())
#define dump(var) cerr << #var ": " << var << "\n"
#define dumpc(con) for(auto& e: con) cerr << e << " "; cerr<<"\n"

typedef long long ll;
typedef unsigned long long ull;

const double EPS = 1e-6;
const int d4[] = {0, -1, 0, 1, 0};

using namespace std;


int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N;
    cin >> N;

    int cnt = 0;
    for (ll pat = 1; pat < (1<<30); pat++) {
        ll c3 = 0, c5 = 1;
        for (ll p = pat; p > 1; p >>=1) {
            if (p&1) c5++;
            else c3++;
        }
        // dump(pat);
        if ((c5*5+c3*3) % 3 == 0) {
            cnt++;
            if (cnt == N) {
                string s = "5";
                for (ll p = pat; p > 1; p >>=1) {
                    s.insert(0, 1, (p&1? '5': '3'));
                }
                cout << s << endl;
                break;
            }
        }
    }
    
    return 0;
}