#include <bits/stdc++.h>
using namespace std;
int num[10005];
int main() {
  int k;
  cin >> k;
  int sum, t, rem, c = 0, ans, i = 1;
  while (c != k) {
    sum = 0;
    t = i;
    while (t) {
      rem = t % 10;
      sum += rem;
      t = t / 10;
    }
    if (sum == 10) {
      num[c + 1] = i;
      c++;
    }
    i++;
  }
  int j = k;
  while (j) {
    if (j >= 1 && num[j] != 0) {
      cout << num[j] << endl;
      break;
    } else
      j--;
  }
}
