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