Kattis 时区测试用例失败

问：

我正在尝试解决 Python 3 中标题为 Kattis 时区的问题。问题的链接在这里 我目前的解决方案：

zones = {
"UTC": 0,
"GMT": 0,
"BST": 1,
"IST": 1,
"WET": 0,
"WEST": 1,
"CET": 1,
"CEST": 2,
"EET": 2,
"EEST": 3,
"MSK": 3,
"MSD": 4,
"AST": -4,
"ADT": -3,
"NST": -3.5,
"NDT": -2.5,
"EST": -5,
"EDT": -4,
"CST": -6,
"CDT": -5,
"MST": -7,
"MDT": -6,
"PST": -8,
"PDT": -7,
"HST": -10,
"AKST": -9,
"AKDT": -8,
"AEST": 10,
"AEDT": 11,
"ACST": 9.5,
"ACDT": 10.5,
"AWST": 8,
}


def add_hours_to_time(input_time, hours_to_add):
    # Split the time string into hours, minutes, and am/pm/noon/midnight parts
    time_parts = input_time.split()
    # Handle "noon" and "midnight" cases
    if len(time_parts) == 1:
        if time_parts[0] == "noon":
            hours = 12
            minutes = 0
        elif time_parts[0] == "midnight":
            hours = 0
            minutes = 0
    else:
        time = time_parts[0]
        period = time_parts[1]
        hours, minutes = tuple(map(int, time.split(':')))
        # Convert to 24-hour format
        if period == 'p.m.':
            if hours != 12:
                hours += 12
        elif period == 'a.m.':
            if hours == 12:
                hours = 0
    # Calculate new hours and minutes
    new_hours = hours + hours_to_add
    new_hours = new_hours % 24
    new_minutes = minutes
    # Decimal handling
    if str(new_hours).endswith(".5"):
        new_minutes += 30
        if new_minutes >= 60:
            new_hours += 1
            over_minutes = new_minutes % 60
            new_minutes = over_minutes
    new_hours = int(new_hours)
    # Final output
    if new_hours == 12:
        if new_minutes == 0:
            time_str = "noon"
        else:
            time_str = f"{new_hours}:{new_minutes:02d} p.m."
    elif new_hours == 0:
        if new_minutes == 0:
            time_str = "midnight"
        else:
            time_str = f"{new_hours + 12}:{new_minutes:02d} a.m."
    else:
        if new_hours < 12:
            time_str = f"{new_hours}:{new_minutes:02d} a.m."
        else:
            new_hours -= 12
            if new_hours == 0:
                time_str = f"{new_hours + 12}:{new_minutes:02d} p.m."
            else:
                time_str = f"{new_hours}:{new_minutes:02d} p.m."
    return time_str


n = int(input())
results = []
for i in range(n):
    times = input()
    times = times.split()
    if len(times) == 4:
        area1 = times[2]
        area2 = times[3]
        diff = zones[area2] - zones[area1]
        result = add_hours_to_time(f"{times[0]} {times[1]}", diff)
        results.append(result)
    elif len(times) == 3:
        area1 = times[1]
        area2 = times[2]
        diff = zones[area2] - zones[area1]
        result = add_hours_to_time(times[0], diff)
        results.append(result)
for something in results:
    print(something)

我的代码总是在第二个测试用例中失败（解决了 1/2 个测试用例）。当我第一次提交它时，我没有通过第二个测试用例。就在那时，我意识到我应该包括十进制支持，因为有些时区有半小时的差异。我合并了十进制支持（由十进制处理注释显示），再次提交，但它仍然未能通过第二个。 我的代码对我来说似乎非常好，我尝试了许多自己的测试用例，所有这些都成功了。 我尝试了十进制测试用例、阴性测试用例、负十进制测试用例等。 它们都不是不正确的。 我目前的策略是有意识地尝试获取不正确的测试用例，并对其进行调试以查明问题。 我希望我的代码会很好，并且会成功解决问题，但是，我仍然停留在最后一个隐藏的测试用例上。 我试过使用 ChatGPT。我试过识别极端情况。没有任何效果。我仍然停留在最后一个隐藏的测试用例上。