#include <bits/stdc++.h>
using namespace std;
void expand(int);
int main() {
  int num;
  cin >> num;
  expand(num);
  cout << "\n";
}
void expand(int value) {
  const char* const ones[20] = {"zero",    "one",       "two",      "three",
                                "four",    "five",      "six",      "seven",
                                "eight",   "nine",      "ten",      "eleven",
                                "twelve",  "thirteen",  "fourteen", "fifteen",
                                "sixteen", "seventeen", "eighteen", "nineteen"};
  const char* const tens[10] = {"",       "ten",   "twenty", "thirty",
                                "forty",  "fifty", "sixty",  "seventy",
                                "eighty", "ninety"};
  if (value < 0) {
    cout << "minus ";
    expand(-value);
  } else if (value >= 20) {
    cout << tens[value / 10];
    if (value % 10) {
      cout << "-";
      expand(value % 10);
    }
  } else {
    cout << ones[value];
  }
  return;
}
