#include <iostream>
using namespace std;

int main()
{
    int n;
    cin >> n;
    int t = n / 36;
    int r = n % 36;
    for (int i = 1; i < 9; i++)
    {
        if (r + i <= 9)
        {
            cout << i;
            for (int j = 0; j <= t; j++)
            {
                cout << i + r;
            }
            cout << endl;
            break;
        }
        r -= 9 - i;
    }
}