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Description The closing ceremony of Squanch Code Cup is held in the big hall with n × m seats, arranged in n rows, m seats in a row. Each seat has two 阅读全文
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Description Consider a regular triangular area, divide it into four equal triangles of half height and remove the one in the middle. Apply the same op 阅读全文
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【问题描述】传说中的九头龙是一种特别贪吃的动物。虽然名字叫“九头龙”,但这只是说它出生的时候有九个头,而在成长的过程中,它有时会长出很多的新头,头的总数会远大于九,当然也会有旧头因衰老而自己脱落。有一天,有 M 个脑袋的九头龙看到一棵长有 N 个果子的果树,喜出望外,恨不得一口把它全部吃掉。可是必须 阅读全文