#include <bits/stdc++.h>
using namespace std;
int main() {
  int ans = 0;
  int i, j, pre[10001];
  long long g;
  for (g = 19;; g++) {
    long long s = g;
    int q = 0;
    while (s > 0) {
      q = q + s % 10;
      s /= 10;
      if (q > 10) break;
    }
    if (q == 10) {
      ans += 1;
      pre[ans] = g;
    }
    if (ans == 10000) break;
  }
  scanf("%d", &i);
  printf("%d\n", pre[i]);
  return 0;
}
