2025-08-19 12:24:40 +0000 UTC

Count Days Spent Together
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Code

class Solution:
    def countDaysTogether(self, arriveAlice: str, leaveAlice: str, arriveBob: str, leaveBob: str) -> int:
        months = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        def count(date: str) -> int:
            month = int(date[:2])
            days = int(date[3:])
            return sum(months[:month - 1]) + days
        return max(0, count(min(leaveAlice, leaveBob)) - count(max(arriveAlice, arriveBob)) + 1)