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Problem Description 又到了选课的时间了,xhd看着选课表发呆,为了想让下一学期好过点,他想知道学n个学分共有多少组合。你来帮帮他吧。(xhd认为一样学分的课没区别) Input输入数据的第一行是一个数据T,表示有T组数据。每组数据的第一行是两个整数n(1 <= n <= 40), 阅读全文
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Problem Description People in Silverland use square coins. Not only they have square shapes but also their values are square numbers. Coins with value 阅读全文
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A. Free Cash time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A. Free Cash time limit per 阅读全文