题解 | #计算日期到天数转换#

while True:
    try:
        s: list = input().split(" ")
        y: int = int(s[0])
        m: int = int(s[1])
        d: int = int(s[2])
        # print(y, m, d)
        dict1: dict = {
            1: 31,
            2: 28,
            3: 31,
            4: 30,
            5: 31,
            6: 30,
            7: 31,
            8: 31,
            9: 30,
            10: 31,
            11: 30,
            12: 31,
        }
        # sum = 0
        # for v in dict1.values():
        #    sum += v
        # print(sum)
        days = d
        for i in range(1, m, 1):
            # print(i)
            days += dict1[i]
        # 判断闰年：四年一闰，百年不闰，四百年闰。
        if ((y % 4 == 0 and y % 100 != 0) or y % 400 == 0) and m > 2:
            days += 1
        print(days)

    except:
        break

月数：1月、2月无影响，大于2月的闰年要多加一天。

闰年：四年一闰，百年不闰，四百年闰。