Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.  Question by Halil Karimis. 
  
Fun Fair
 Task: 
 
Primary school teacher with N pupils
from 3-A class decide to go to funfair 
at the weekend. In funfair they want to 
take a ride on ferris wheel. Ferris wheel 
can hold up most to K person at one rotation 
ride. One ferris wheel rotation ride takes 
M minute. Each student wants to ride ferris 
wheel twice.  
Find out minimum time that teacher have
to spend at ferris wheel if all his students
will take a ride twice. 
Input specification   
Get three numbers:
 
- K - Maximum number of person that Ferris wheel can hold up.
 
- M - Time spended for one Ferris wheel ride.
 
- N - Number of pupil.
 
 
Output specification   
Show one number: total time spended on ferris wheel.
 
|  Sample Input I    | 
 Sample Input II    | 
 Sample Input III    | 
 
 2 4 8  
 | 
 30 5 12  
 | 
 3 6 7  
 | 
 
|  Sample Output I    | 
 Sample Output II    | 
 Sample Output III    | 
 
 32 
 | 
 10 
 | 
 36 
   | 
 
 
 
Для отправки решений необходимо выполнить вход.
  
 |