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Lucky and Good Months by Gregorian CalendarTime Limit:1000MSMemory Limit:65536KTotal Submissions:887Accepted:258DescriptionHave you ever wondered why normally an year has 365 days, not 400 days? Why August have 31 days, but February have only 28 days? Why there are 7 days, not 6 days, in a week? Do 阅读全文
posted @ 2011-05-27 16:14
Eric-Yang
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