Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.
Difficulty Beta
Water Bills
City water company wants to prepare bills faster, now. Write a program for them that reads
the water usage amounts of n people and then the program is going to show the sum of the bills.
The water rates are computed as follows:
- $10 fixed price for the first 4 tones
- If it exceeds 4 tones; $0.005 for each additional litre.
Your program will first get the number of bills to proceed (n). Then n integers
represent the amount of water used (litres). It will then print the total sum due from all users.
Input specification
You will be given an integer number (n) where 0 < n ≤ 50000. Then, n intgers are given
in the following n lines. The water usage amount for every
customer is between 0 and 40000 liters
Output specification
Show the total sum due from all users. The number will contain
at most three digits after the floating point.
Note: Use setprecision from iomanip library.
Sample Input I
5
5000
4200
4400
3000
6010
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Sample Input II
10
4511
3414
3864
3440
3300
5505
3243
5433
4734
3990
|
Sample Output I
68.05
|
Sample Output II
120.915
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Для отправки решений необходимо выполнить вход.
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