#include <bits/stdc++.h>   using namespace std;   void low(int n) {     switch (n) {       default:         cout <<  zero ;         break;       case 1:         cout <<  one ;         break;       case 2:         cout <<  two ;         break;       case 3:         cout <<  three ;         break;       case 4:         cout <<  four ;         break;       case 5:         cout <<  five ;         break;       case 6:         cout <<  six ;         break;       case 7:         cout <<  seven ;         break;       case 8:         cout <<  eight ;         break;       case 9:         cout <<  nine ;         break;       case 10:         cout <<  ten ;         break;       case 11:         cout <<  eleven ;         break;       case 12:         cout <<  twelve ;         break;       case 13:         cout <<  thirteen ;         break;       case 14:         cout <<  fourteen ;         break;       case 15:         cout <<  fifteen ;         break;       case 16:         cout <<  sixteen ;         break;       case 17:         cout <<  seventeen ;         break;       case 18:         cout <<  eighteen ;         break;       case 19:         cout <<  nineteen ;         break;     }   }   void high(int n) {     switch (n) {       case 2:         cout <<  twenty ;         break;       case 3:         cout <<  thirty ;         break;       case 4:         cout <<  forty ;         break;       case 5:         cout <<  fifty ;         break;       case 6:         cout <<  sixty ;         break;       case 7:         cout <<  seventy ;         break;       case 8:         cout <<  eighty ;         break;       default:         cout <<  ninety ;         break;     }   }   int main() {     int n;     cin >> n;     if (n < 20)       low(n);     else {       high(n / 10);       if (n % 10 != 0) {         cout <<  - ;         low(n % 10);       }     }     return 0;   }   