#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <functional>
#include <tuple>
#include <climits>
#include <algorithm>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <set>
#include <iomanip>

using namespace std;

int main()
{
    string number = "53";
    int N;
    cin >> N;
    int n = 0;
    int sum = 8;
    while(n!=N) {
        int index = 1;
        while(true) {
            if(index>=number.size()) {
                number += '3';
                sum += 3;
                break;
            }
            if(number[index]=='3') {
                number[index] = '5';
                sum += 2;
                break;
            }
            number[index] = '3';
            sum -= 2;
            index++;
        }
        if(sum % 3 == 0) {
            n++;
        }
    }
    reverse(number.begin(), number.end());
    cout << number << endl;
}