#include <bits/stdc++.h>
using namespace std;
int main() {
  char first[11][10] = {"zero", "one",   "two",   "three", "four", "five",
                        "six",  "seven", "eight", "nine",  "ten"};
  char last[9][10] = {"eleven",  "twelve",    "thirteen", "fourteen", "fifteen",
                      "sixteen", "seventeen", "eighteen", "nineteen"};
  char now[8][10] = {"twenty", "thirty",  "forty",  "fifty",
                     "sixty",  "seventy", "eighty", "ninety"};
  int n;
  cin >> n;
  if (n <= 10)
    cout << first[n] << endl;
  else if (n > 10 && n < 20) {
    int f = (n % 10) - 1;
    cout << last[f] << endl;
  } else if (n > 19) {
    if (n >= 20 && n <= 29) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 20)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 30 && n <= 39) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 30)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 40 && n <= 49) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 40)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 50 && n <= 59) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 50)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 60 && n <= 69) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 60)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 70 && n <= 79) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 70)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 80 && n <= 89) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 80)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n >= 90 && n <= 99) {
      int l = n % 10;
      int f = (n / 10) - 2;
      if (n == 90)
        cout << now[f] << endl;
      else
        cout << now[f] << "-" << first[l] << endl;
    } else if (n == 100)
      cout << "one-hundred" << endl;
  }
  return 0;
}
