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