#include <bits/stdc++.h>
using namespace std;
int a[5005] = {0};
void ge(int a) {
  if (a == 1)
    printf("one\n");
  else if (a == 2)
    printf("two\n");
  else if (a == 3)
    printf("three\n");
  else if (a == 4)
    printf("four\n");
  else if (a == 5)
    printf("five\n");
  else if (a == 6)
    printf("six\n");
  else if (a == 7)
    printf("seven\n");
  else if (a == 8)
    printf("eight\n");
  else if (a == 9)
    printf("nine\n");
}
int main() {
  std::ios::sync_with_stdio(false);
  int n;
  cin >> n;
  if (n == 0)
    printf("zero\n");
  else if (n == 1)
    printf("one\n");
  else if (n == 2)
    printf("two\n");
  else if (n == 3)
    printf("three\n");
  else if (n == 4)
    printf("four\n");
  else if (n == 5)
    printf("five\n");
  else if (n == 6)
    printf("six\n");
  else if (n == 7)
    printf("seven\n");
  else if (n == 8)
    printf("eight\n");
  else if (n == 9)
    printf("nine\n");
  else if (n == 10)
    printf("ten\n");
  else if (n == 11)
    printf("eleven\n");
  else if (n == 12)
    printf("twelve\n");
  else if (n == 13)
    printf("thirteen\n");
  else if (n == 14)
    printf("fourteen\n");
  else if (n == 15)
    printf("fifteen\n");
  else if (n == 16)
    printf("sixteen\n");
  else if (n == 17)
    printf("seventeen\n");
  else if (n == 18)
    printf("eighteen\n");
  else if (n == 19)
    printf("nineteen\n");
  else if (n == 20)
    printf("twenty\n");
  else if (n > 20 && n <= 29) {
    printf("twenty-");
    int k = n % 10;
    ge(k);
  } else if (n == 30) {
    printf("thirty\n");
  } else if (n > 30 && n <= 39) {
    printf("thirty-");
    int k = n % 10;
    ge(k);
  } else if (n == 40)
    printf("forty\n");
  else if (n > 40 && n <= 49) {
    printf("forty-");
    int k = n % 10;
    ge(k);
  } else if (n == 50)
    printf("fifty\n");
  else if (n > 50 && n <= 59) {
    printf("fifty-");
    int k = n % 10;
    ge(k);
  } else if (n == 60)
    printf("sixty\n");
  else if (n > 60 && n <= 69) {
    printf("sixty-");
    int k = n % 10;
    ge(k);
  } else if (n == 70)
    printf("seventy\n");
  else if (n > 70 && n <= 79) {
    printf("seventy-");
    int k = n % 10;
    ge(k);
  } else if (n == 80)
    printf("eighty\n");
  else if (n > 80 && n <= 89) {
    printf("eighty-");
    int k = n % 10;
    ge(k);
  } else if (n == 90)
    printf("ninety\n");
  else if (n > 90 && n <= 99) {
    printf("ninety-");
    int k = n % 10;
    ge(k);
  }
  return 0;
}
