Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.
Albanian Airlines
Albanian Airlines applies the following discounts according
to the age of the passengers.
- Between the ages 0 and 2: 90%
- Between the ages 3 and 9: 40%
- Age of 10 and over: No discount
Question:
Write a program which reads number of passengers (n)
and price of one ticket (price). Then, ages of n
people will be given. The program will then calculate
the total amount of the money paid by all passengers.
Input specification
You will be first given two integers (n and price)
where 0 ≤ n ≤ 5000 and 0 ≤ price ≤ 2000.
Then, in the following n lines you will be given
ages of n people where ages are between 0 and 100.
Output specification
Show one number with 2 digits double precision.
Sample Input
5 250
10
2
8
24
5
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Sample Output
825
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Для отправки решений необходимо выполнить вход.
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