求助大佬帮忙看一下，谢谢！

x, n = input().split()
x, n = int(x), int(n)
n = n - 1

#输入开始日结束日，返回工作日天数，两端包含
def day(st, en):
    if en < st:
        return 0
    elif en < 6:
        return en - st + 1
    else:
        return 5 - st + 1

if n <= 7-x:
    DAYS = day(x, 7)
else:
    left_d = day(x, 7)
    whole_d = int((n + x - 7)/7)*5
    right = (n + x - 7) % 7
    right_d = day(1, right)
    DAYS = left_d + whole_d + right_d

print(DAYS * 250)