#include <bits/stdc++.h>   using namespace std;   string a[] = { zero ,  one ,  two ,    three ,  four ,                  five ,  six ,  seven ,  eight ,  nine };   string b[] = { ten ,    twenty ,   thirty ,  forty ,  fifty ,                  sixty ,  seventy ,  eighty ,  ninety };   string c[] = { eleven ,   twelve ,     thirteen ,  fourteen ,  fifteen ,                  sixteen ,  seventeen ,  eighteen ,  nineteen };   int main() {     int n;     cin >> n;     if (n < 10) {       cout << a[n] << endl;       return 0;     } else {       if (n % 10 == 0) {         cout << b[(n / 10) - 1] << endl;         return 0;       } else if (n > 10 && n < 20) {         cout << c[(n % 10) - 1] << endl;         return 0;       } else {         cout << b[(n / 10) - 1] <<  -  << a[n % 10] << endl;       }     }     return 0;   }   