#include <bits/stdc++.h>
using namespace std;
int main() {
  int x, rem;
  cin >> x;
  if (x < 10) {
    rem = x % 10;
    if (rem == 1)
      cout << "one";
    else if (rem == 2)
      cout << "two";
    else if (rem == 3)
      cout << "three";
    else if (rem == 4)
      cout << "four";
    else if (rem == 5)
      cout << "five";
    else if (rem == 6)
      cout << "six";
    else if (rem == 7)
      cout << "seven";
    else if (rem == 8)
      cout << "eight";
    else if (rem == 9)
      cout << "nine";
    else if (rem == 0)
      cout << "zero";
  } else if (x == 10)
    cout << "ten";
  if (x >= 90) {
    cout << "ninety";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 80) {
    cout << "eighty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 70) {
    cout << "seventy";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 60) {
    cout << "sixty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 50) {
    cout << "fifty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 40) {
    cout << "forty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 30) {
    cout << "thirty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x >= 20) {
    cout << "twenty";
    rem = x % 10;
    if (rem == 1)
      cout << "-one";
    else if (rem == 2)
      cout << "-two";
    else if (rem == 3)
      cout << "-three";
    else if (rem == 4)
      cout << "-four";
    else if (rem == 5)
      cout << "-five";
    else if (rem == 6)
      cout << "-six";
    else if (rem == 7)
      cout << "-seven";
    else if (rem == 8)
      cout << "-eight";
    else if (rem == 9)
      cout << "-nine";
  } else if (x > 10) {
    rem = x % 10;
    if (rem == 1)
      cout << "eleven";
    else if (rem == 2)
      cout << "twelve";
    else if (rem == 3)
      cout << "thirteen";
    else if (rem == 4)
      cout << "fourteen";
    else if (rem == 5)
      cout << "fifteen";
    else if (rem == 6)
      cout << "sixteen";
    else if (rem == 7)
      cout << "seventeen";
    else if (rem == 8)
      cout << "eighteen";
    else if (rem == 9)
      cout << "nineteen";
  }
  return 0;
}
