#include <bits/stdc++.h>
using namespace std;
long long a[1000005];
int main() {
  long long k;
  long long m = 19;
  for (long long i = 1; i <= 10000;) {
    int sum = 0;
    long long n = m;
    while (n != 0) {
      sum = sum + n % 10;
      n = n / 10;
    }
    if (sum == 10) {
      a[i] = m;
      i++;
    }
    m++;
  }
  while (cin >> k) {
    cout << a[k] << endl;
  }
}
