2025-08-15 10:31:41 +0000 UTC

class Solution:
    def maximumTime(self, time: str) -> str:
        hours, minutes = time.split(":")
        hour1, hour2 = hours
        minute1, minute2 = minutes
        if hour1 == "?" and hour2 == "?":
            hour1, hour2 = "2", "3"
        elif hour1 == "?" and hour2 < "4":
            hour1 = "2"
        elif hour1 == "?":
            hour1 = "1"
        elif hour1 == "2" and hour2 == "?":
            hour2 = "3"
        elif hour2 == "?":
            hour2 = "9"
        if minute1 == "?":
            minute1 = "5"
        if minute2 == "?":
            minute2 = "9"
        return ":".join(("".join((hour1, hour2)), "".join((minute1, minute2))))