Call to Home

Call to Home

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Nicola believes that Sophia calls Home too much and her phone bill is much too expensive. He took the bills for Sophia's calls from the last few days and wants to calculate how much did it cost.

The bill is represented as an array with information about the calls. Help...

For example:

2014-01-01 01:12:13 181
2014-01-02 20:11:10 600
2014-01-03 01:12:13 6009
2014-01-03 12:13:55 200
First day -- 181s≈4m -- 4 coins;
Second day -- 600s=10m -- 10 coins;
Third day -- 6009s≈101m + 200s≈4m -- 100 + 5 * 2 = 110 coins;
Total -- 124 coins.

Input: The information about calls as a tuple of strings.

Output: The total cost as an integer.


total_cost(("2014-01-01 01:12:13 181",
            "2014-01-02 20:11:10 600",
            "2014-01-03 01:12:13 6009",
            "2014-01-03 12:13:55 200")) == 124

How it is used: This mission will teach you how to parse and analyze various types of data. Sometimes you don't need the full data and should single out only the important fragments.

Precondition: 0 < len(calls) ≤ 30
0 < call_duration ≤ 7200
The bill is sorted by datetime.

You should be an authorized user in order to see the full description and start solving this mission.
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