Recently there was a population census in Mirko's country. Along with numerous other data that were being collected, a very important part was the data about television ratings.
Each of the
HH:MM:SS - HH:MM:SS
The first timestamp describes the time of the day when a citizen started watching television, and the second one the time when that citizen stopped watching. The citizen also watched television during the first and the last second of the given interval. Note that it is possible to start watching before midnight, e.g., at 23:45:30
, and not finish until the next day, e.g., at 01:15:00
.
After all the data has been collected, statisticians are gathered in order to analyse it.
We define the popularity of some second as the total number of citizens that were watching television during that second. Furthermore, the popularity of the given time interval is defined as the sum of popularities of seconds contained within that interval, divided by the length of the interval.
Calculate the popularities of the
Input Specification
The first line of input contains integer
The following
In the following line there is an integer
The following
Output Specification
For each of the
A solution will be accepted if the absolute or relative error is at most
Scoring
In test cases worth a total of
In test cases worth a total of
In test cases worth a total of
Sample Input 1
5
00:00:00 - 00:00:01
00:00:01 - 00:00:03
00:00:00 - 00:00:02
00:00:05 - 00:00:09
00:00:06 - 00:00:06
5
00:00:00 - 00:00:03
00:00:07 - 00:00:09
00:00:06 - 00:00:06
00:00:05 - 00:00:09
00:00:00 - 00:00:09
Sample Output 1
2.0000000000
1.0000000000
2.0000000000
1.2000000000
1.4000000000
Sample Input 2
3
00:00:00 - 10:00:00
10:00:00 - 00:00:00
01:01:01 - 02:02:02
4
00:00:00 - 23:59:59
23:59:59 - 23:59:58
23:59:59 - 23:59:59
08:34:43 - 12:22:17
Sample Output 2
1.0424074074
1.0424074074
1.0000000000
1.0000732332
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