#include <iostream>
using namespace std;

int main()
{
    int n;
    cin >> n;
    for (int i = 9999; i >= 1000; i-- )
    {
        int cifra = i;
        int x = 0;
        int b = 0;
        while (cifra > 0)
        {
            x = cifra % 10;
            cifra = cifra / 10;
            if (x == 0)
            {
                b += 6;
            }
            else if (x == 1)
            {
                b += 3;
            }
            else if (x == 2)
            {
                b += 5;
            }
            else if (x == 3)
            {
                b += 5;
            }
            else if (x == 4)
            {
                b += 4;
            }
            else if (x == 5)
            {
                b += 5;
            }
            else if (x == 6)
            {
                b += 5;
            }
            else if ( x == 7)
            {
                b += 3;
            }
            else if ( x == 8)
            {
                b += 7;
            }
            else if (x == 9)
            {
                b += 5;
            }
        }
        if (b == n)
        {
            cout << i;
            return 0;
        }


    }
    cout << -1;
    return 0;
}