#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <numeric>
#include <functional>
#include <cmath>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <sstream>
#include <string>
#include <bitset>

#define repd(i,a,b) for (int i=(a);i<(b);i++)
#define rep(i,n) repd(i,0,n)
#define var auto
#define mod 1000000007
#define inf 2147483647
typedef long long ll;

using namespace std;

int inputValue(){
    int a;
    cin >> a;
    return a;
}

template <typename T>
void output(T a, int precision) {
    if(precision > 0){
        cout << fixed << setprecision(precision)  << a << "\n";
    }
    else{
        cout << a << "\n";
    }
}

// end of template

int main() {
    // source code
    
    ll M = 1;
    int N = inputValue();
    
    int cnt = 0;
    
    string ret;
    int b;
    ll r = 0;
    
    for (b = 0; b < 30; b++) {
        M = 1 << b;
        repd(i, 0, M){

            int bcnt = 0;
            
            rep(k, b){
                if ((i >> k) & 1) {
                    bcnt++;
                }
            }
            
            if (bcnt % 3 == 2) {
                cnt++;
            }
            else{
                continue;
            }
            if (cnt == N) {
                r = i;
                break;
            }
        }
        if (cnt == N) {
            break;
        }
    }
    
    rep(k, b){
        if ((r >> k) & 1) {
            ret += "5";
        }
        else{
            ret += "3";
        }
    }
    
    reverse(ret.begin(), ret.end());
    ret += "5";
    
    output(ret, 0);
    
    return 0;
}