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是不是该给个π啊

Posted by LaPartida at 2013-02-17 19:30:06 on Problem 1005
可能我太弱了,不过总觉得π的精确度不明确的话测试数据要是不巧可能会有结果出入的,如果取的太长又可能会影响效率(0k的可能觉得完全不会影响,我不太懂),反正也不是考查π的,给一个标准的吧,方便新手,好在我3.1416过了

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