#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  if (n == 1)
    cout << "one";
  else if (n == 2)
    cout << "two";
  else if (n == 3)
    cout << "three";
  else if (n == 4)
    cout << "four";
  else if (n == 5)
    cout << "five";
  else if (n == 6)
    cout << "six";
  else if (n == 7)
    cout << "seven";
  else if (n == 8)
    cout << "eight";
  else if (n == 9)
    cout << "nine";
  else if (n == 10)
    cout << "ten";
  else if (n == 11)
    cout << "eleven";
  else if (n == 12)
    cout << "twelve";
  else if (n == 13)
    cout << "thirteen";
  else if (n == 14)
    cout << "fourteen";
  else if (n == 15)
    cout << "fifteen";
  else if (n == 16)
    cout << "sixteen";
  else if (n == 17)
    cout << "seventeen";
  else if (n == 18)
    cout << "eighteen";
  else if (n == 19)
    cout << "nineteen";
  else if (n == 20)
    cout << "twenty";
  else if (n == 21)
    cout << "twenty-one";
  else if (n == 22)
    cout << "twenty-two";
  else if (n == 23)
    cout << "twenty-three";
  else if (n == 24)
    cout << "twenty-four";
  else if (n == 25)
    cout << "twenty-five";
  else if (n == 26)
    cout << "twenty-six";
  else if (n == 27)
    cout << "twenty-seven";
  else if (n == 28)
    cout << "twenty-eight";
  else if (n == 29)
    cout << "twenty-nine";
  else if (n == 30)
    cout << "thirty";
  else if (n == 31)
    cout << "thirty-one";
  else if (n == 32)
    cout << "thirty-two";
  else if (n == 33)
    cout << "thirty-three";
  else if (n == 34)
    cout << "thirty-four";
  else if (n == 35)
    cout << "thirty-five";
  else if (n == 36)
    cout << "thirty-six";
  else if (n == 37)
    cout << "thirty-seven";
  else if (n == 38)
    cout << "thirty-eight";
  else if (n == 39)
    cout << "thirty-nine";
  else if (n == 40)
    cout << "forty";
  else if (n == 41)
    cout << "forty-one";
  else if (n == 42)
    cout << "forty-two";
  else if (n == 43)
    cout << "forty-three";
  else if (n == 44)
    cout << "forty-four";
  else if (n == 45)
    cout << "forty-five";
  else if (n == 46)
    cout << "forty-six";
  else if (n == 47)
    cout << "forty-seven";
  else if (n == 48)
    cout << "forty-eight";
  else if (n == 49)
    cout << "forty-nine";
  else if (n == 50)
    cout << "fifty";
  else if (n == 51)
    cout << "fifty-one";
  else if (n == 52)
    cout << "fifty-two";
  else if (n == 53)
    cout << "fifty-three";
  else if (n == 54)
    cout << "fifty-four";
  else if (n == 55)
    cout << "fifty-five";
  else if (n == 56)
    cout << "fifty-six";
  else if (n == 57)
    cout << "fifty-seven";
  else if (n == 58)
    cout << "fifty-eight";
  else if (n == 59)
    cout << "fifty-nine";
  else if (n == 60)
    cout << "sixty";
  else if (n == 61)
    cout << "sixty-one";
  else if (n == 62)
    cout << "sixty-two";
  else if (n == 63)
    cout << "sixty-three";
  else if (n == 64)
    cout << "sixty-four";
  else if (n == 65)
    cout << "sixty-five";
  else if (n == 66)
    cout << "sixty-six";
  else if (n == 67)
    cout << "sixty-seven";
  else if (n == 68)
    cout << "sixty-eight";
  else if (n == 69)
    cout << "sixty-nine";
  else if (n == 70)
    cout << "seventy";
  else if (n == 71)
    cout << "seventy-one";
  else if (n == 72)
    cout << "seventy-two";
  else if (n == 73)
    cout << "seventy-three";
  else if (n == 74)
    cout << "seventy-four";
  else if (n == 75)
    cout << "seventy-five";
  else if (n == 76)
    cout << "seventy-six";
  else if (n == 77)
    cout << "seventy-seven";
  else if (n == 78)
    cout << "seventy-eight";
  else if (n == 79)
    cout << "seventy-nine";
  else if (n == 80)
    cout << "eighty";
  else if (n == 81)
    cout << "eighty-one";
  else if (n == 82)
    cout << "eighty-two";
  else if (n == 83)
    cout << "eighty-three";
  else if (n == 84)
    cout << "eighty-four";
  else if (n == 85)
    cout << "eighty-five";
  else if (n == 86)
    cout << "eighty-six";
  else if (n == 87)
    cout << "eighty-seven";
  else if (n == 88)
    cout << "eighty-eight";
  else if (n == 89)
    cout << "eighty-nine";
  else if (n == 90)
    cout << "ninety";
  else if (n == 91)
    cout << "ninety-one";
  else if (n == 92)
    cout << "ninety-two";
  else if (n == 93)
    cout << "ninety-three";
  else if (n == 94)
    cout << "ninety-four";
  else if (n == 95)
    cout << "ninety-five";
  else if (n == 96)
    cout << "ninety-six";
  else if (n == 97)
    cout << "ninety-seven";
  else if (n == 98)
    cout << "ninety-eight";
  else if (n == 99)
    cout << "ninety-nine";
  else if (n == 0)
    cout << "zero";
  return 0;
}
