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Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.  Show the total cost to pay for a money transfer. 
  
  
Bank Charges
Question:  
Suppose you transfer $N and bank's charge occurs
as follows:
 
- Cost is $10, if N ≤500
 
- Cost is $10+2% of N, if 500 < N < 1000
 
- Cost is $10 + 1% of N, if 1000 ≤ N ≤ 3000 
 
- Maximum cost is 40$ 
 
 
 
Input specification   
You will be given a floating point number (N) where
1 ≤ N ≤ 10000
 
Output specification   
Show the total cost to pay. Use at most two precision 
digits after the floating point.    
 
|  Sample Input I    | 
 Sample Input II    |   
 300    | 
 2000   | 
 
|  Sample Output I    | 
 Sample Output II    | 
 
 10    | 
 30.00    | 
 
 
Для отправки решений необходимо выполнить вход.
  
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