ICPC 2019 vòng Regional: Bài D

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Points: 0.30
Time limit: 1.0s
Memory limit: 512M
Input: stdin
Output: stdout

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Problem type
Allowed languages
C, C++, Java, Kotlin, Pascal, PyPy, Python, Scratch

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Sample Input 1

3
00:00 23:59 0
00:00 23:59 90
18:00 18:01 180

Sample Output 1

22
44
1

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