#include <bits/stdc++.h>
using namespace std;
void speed_cin() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
}
void file() {
  freopen("sumy.in", "r", stdin);
  freopen("sumy.out", "w", stdout);
}
int main() {
  long long k;
  cin >> k;
  long long i = 19;
  while (k > 0) {
    long long n = 0;
    long long j = i;
    while (j > 0) {
      n += j % 10;
      j /= 10;
    }
    if (n == 10) {
      --k;
    }
    i++;
  }
  cout << i - 1;
}
