#include <cstdio>
#include <cstring>
#include <iostream>using std::string;
using std::cout;
using std::cin;string c[10000];int len;
int num;
int num2;int br[10];namespace LYD
{void start(){c[0] = "zero";c[1] = "one";c[2] = "two";c[3] = "three";c[4] = "four";c[5] = "five";c[6] = "six";c[7] = "seven";c[8] = "eight";c[9] = "nine";c[10] = "ten";c[11] = "eleven";c[12] = "twelve";c[13] = "thirteen";c[14] = "fourteen";c[15] = "fifteen";c[16] = "sixteen";c[17] = "seventeen";c[18] = "eighteen";c[19] = "nineteen";c[20] = "twenty";c[30] = "thirty";c[40] = "forty";c[50] = "fifty";c[60] = "sixty";c[70] = "seventy";c[80] = "eighty";c[90] = "ninety";c[100] = "hundred";c[1000] = "thousand";}
}int main()
{using namespace LYD;start();scanf("%d", &num);num2 = num;while(1){len++;num2 /= 10;if(num2 == 0)break;}num2 = num;for(int i = len; i >= 1; i--){br[i] = num2 % 10;num2 /= 10;}if(len == 1)cout << c[num];if(len == 2){if(num%10 == 0)cout << c[num];else{if(num >= 20)cout << c[br[1] * 10] << " " << c[num % 10];elsecout << c[num];}}num2 = num;if(len == 3){cout << c[br[1]] << " " << c[100] << " ";if(br[2] == 0 && num % 100 != 0){cout << "and" << " " << c[br[3]] << " ";return 0;}if(num2 % 100 >= 10){num2 %= 100;if(num2 % 10 == 0 || num2 <= 20){cout << c[num2] << " ";return 0;}elsecout << c[br[2] * 10] << " " << c[br[3]] << " ";}}if(len == 4){cout << c[br[1]] << " " << c[1000] << " ";if(num % 1000 == 0)return 0;if(br[2] != 0){cout << c[br[2]] << " " << c[100] << " ";if(br[3] == 0 && br[4] != 0){cout << "and" << " " << c[br[4]] << " ";return 0;}if(br[3] != 0 && br[4] == 0){cout << c[br[3] * 10] << " ";return 0;}if(br[3] != 0 && br[4] != 0){if(br[3] <= 2){cout << c[br[3] * 10 + br[4]] << " ";return 0;}else{cout << c[br[3] * 10] << " " << c[br[4]] << " ";return 0;}}}if(br[2] == 0){cout << "and" << " ";if(br[3] <= 2){cout << c[br[3] * 10 + br[4]] << " ";return 0;}else{cout << c[br[3]*10] << " " << c[br[4]] << " ";return 0;}}}return 0;
}