Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Prepared by Ibrahim Mesecan.
Total Salary Paid
There are many people working in Mr. Uldedaj's factory.
He calculates the weekly salaries according to the following criteria.
- Up to 20 hours fixed salary: even if they work less than 20 hours they are paid for 20 hours
- Up to 30 hours fixed rate per hours,
- Between 31 and 35: 10% more than the fixed hourly rate
- Between 36 and 40: 20% more than the fixed hourly rate
- Between 41 and 45: 30% more than the fixed hourly rate
- Above 45: No salary. That's, in a week, max 45 hours is paid.
Question:
Write a program that reads the
working hours of the staff and calculates the total salary to be paid in that month.
Input specification
The first line of the input contains an integer: the number of people (n) where 0 ≤ n ≤ 10000.
Then, the following n lines contain two numbers for every worker:
- fixed hourly rate: a floating point number
- and number of hours workded: an integer
Output specification
Show one floating point number with 2 digits precision after the floating point.
Sample Input I
5
265 44
280.7 47
205 10
260 21
170 47
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Sample Output I
43569.1
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Explanation:
Total weekly salary of the workers: 43569.1
- 12375.5
- 13473.6
- 4100
- 5460
- 8160
Для отправки решений необходимо выполнить вход.
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