#include <bits/stdc++.h>
using namespace std;
int n;
string a[100];
int main() {
  a[0] = "zero";
  a[1] = "one";
  a[2] = "two";
  a[3] = "three";
  a[4] = "four";
  a[5] = "five";
  a[6] = "six";
  a[7] = "seven";
  a[8] = "eight";
  a[9] = "nine";
  a[10] = "ten";
  a[11] = "eleven";
  a[12] = "twelve";
  a[13] = "thirteen";
  a[14] = "fourteen";
  a[15] = "fifteen";
  a[16] = "sixteen";
  a[17] = "seventeen";
  a[18] = "eighteen";
  a[19] = "nineteen";
  a[20] = "twenty";
  a[21] = "twenty-one";
  a[22] = "twenty-two";
  a[23] = "twenty-three";
  a[24] = "twenty-four";
  a[25] = "twenty-five";
  a[26] = "twenty-six";
  a[27] = "twenty-seven";
  a[28] = "twenty-eight";
  a[29] = "twenty-nine";
  a[30] = "thirty";
  a[31] = "thirty-one";
  a[32] = "thirty-two";
  a[33] = "thirty-three";
  a[34] = "thirty-four";
  a[35] = "thirty-five";
  a[36] = "thirty-six";
  a[37] = "thirty-seven";
  a[38] = "thirty-eight";
  a[39] = "thirty-nine";
  a[40] = "forty";
  a[41] = "forty-one";
  a[42] = "forty-two";
  a[43] = "forty-three";
  a[44] = "forty-four";
  a[45] = "forty-five";
  a[46] = "forty-six";
  a[47] = "forty-seven";
  a[48] = "forty-eight";
  a[49] = "forty-nine";
  a[50] = "fifty";
  a[51] = "fifty-one";
  a[52] = "fifty-two";
  a[53] = "fifty-three";
  a[54] = "fifty-four";
  a[55] = "fifty-five";
  a[56] = "fifty-six";
  a[57] = "fifty-seven";
  a[58] = "fifty-eight";
  a[59] = "fifty-nine";
  a[60] = "sixty";
  a[61] = "sixty-one";
  a[62] = "sixty-two";
  a[63] = "sixty-three";
  a[64] = "sixty-four";
  a[65] = "sixty-five";
  a[66] = "sixty-six";
  a[67] = "sixty-seven";
  a[68] = "sixty-eight";
  a[69] = "sixty-nine";
  a[70] = "seventy";
  a[71] = "seventy-one";
  a[72] = "seventy-two";
  a[73] = "seventy-three";
  a[74] = "seventy-four";
  a[75] = "seventy-five";
  a[76] = "seventy-six";
  a[77] = "seventy-seven";
  a[78] = "seventy-eight";
  a[79] = "seventy-nine";
  a[80] = "eighty";
  a[81] = "eighty-one";
  a[82] = "eighty-two";
  a[83] = "eighty-three";
  a[84] = "eighty-four";
  a[85] = "eighty-five";
  a[86] = "eighty-six";
  a[87] = "eighty-seven";
  a[88] = "eighty-eight";
  a[89] = "eighty-nine";
  a[90] = "ninety";
  a[91] = "ninety-one";
  a[92] = "ninety-two";
  a[93] = "ninety-three";
  a[94] = "ninety-four";
  a[95] = "ninety-five";
  a[96] = "ninety-six";
  a[97] = "ninety-seven";
  a[98] = "ninety-eight";
  a[99] = "ninety-nine";
  cin >> n;
  cout << a[n];
  return 0;
}
