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