#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e2 + 8;
string s[maxn];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  s[0] = "zero";
  s[1] = "one";
  s[2] = "two";
  s[3] = "three";
  s[4] = "four";
  s[5] = "five";
  s[6] = "six";
  s[7] = "seven";
  s[8] = "eight";
  s[9] = "nine";
  s[10] = "ten";
  s[11] = "eleven";
  s[12] = "twelve";
  s[13] = "thirteen";
  s[14] = "fourteen";
  s[15] = "fifteen";
  s[16] = "sixteen";
  s[17] = "seventeen";
  s[18] = "eighteen";
  s[19] = "nineteen";
  s[20] = "twenty";
  s[21] = "twenty-one";
  s[22] = "twenty-two";
  s[23] = "twenty-three";
  s[24] = "twenty-four";
  s[25] = "twenty-five";
  s[26] = "twenty-six";
  s[27] = "twenty-seven";
  s[28] = "twenty-eight";
  s[29] = "twenty-nine";
  s[30] = "thirty";
  s[31] = "thirty-one";
  s[32] = "thirty-two";
  s[33] = "thirty-three";
  s[34] = "thirty-four";
  s[35] = "thirty-five";
  s[36] = "thirty-six";
  s[37] = "thirty-seven";
  s[38] = "thirty-eight";
  s[39] = "thirty-nine";
  s[40] = "forty";
  s[41] = "forty-one";
  s[42] = "forty-two";
  s[43] = "forty-three";
  s[44] = "forty-four";
  s[45] = "forty-five";
  s[46] = "forty-six";
  s[47] = "forty-seven";
  s[48] = "forty-eight";
  s[49] = "forty-nine";
  s[50] = "fifty";
  s[51] = "fifty-one";
  s[52] = "fifty-two";
  s[53] = "fifty-three";
  s[54] = "fifty-four";
  s[55] = "fifty-five";
  s[56] = "fifty-six";
  s[57] = "fifty-seven";
  s[58] = "fifty-eight";
  s[59] = "fifty-nine";
  s[60] = "sixty";
  s[61] = "sixty-one";
  s[62] = "sixty-two";
  s[63] = "sixty-three";
  s[64] = "sixty-four";
  s[65] = "sixty-five";
  s[66] = "sixty-six";
  s[67] = "sixty-seven";
  s[68] = "sixty-eight";
  s[69] = "sixty-nine";
  s[70] = "seventy";
  s[71] = "seventy-one";
  s[72] = "seventy-two";
  s[73] = "seventy-three";
  s[74] = "seventy-four";
  s[75] = "seventy-five";
  s[76] = "seventy-six";
  s[77] = "seventy-seven";
  s[78] = "seventy-eight";
  s[79] = "seventy-nine";
  s[80] = "eighty";
  s[81] = "eighty-one";
  s[82] = "eighty-two";
  s[83] = "eighty-three";
  s[84] = "eighty-four";
  s[85] = "eighty-five";
  s[86] = "eighty-six";
  s[87] = "eighty-seven";
  s[88] = "eighty-eight";
  s[89] = "eighty-nine";
  s[90] = "ninety";
  s[91] = "ninety-one";
  s[92] = "ninety-two";
  s[93] = "ninety-three";
  s[94] = "ninety-four";
  s[95] = "ninety-five";
  s[96] = "ninety-six";
  s[97] = "ninety-seven";
  s[98] = "ninety-eight";
  s[99] = "ninety-nine";
  long long n;
  cin >> n;
  cout << s[n] << endl;
  return 0;
}
