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two traps

Posted by aoxboxcox at 2014-08-01 10:02:36 on Problem 1508 and last updated at 2014-08-01 10:03:48
(1) 所有电梯都不到A也不到B,不过A==B,要输出 It is possible……
(2) 数据范围上,Xi×Xj有可能int溢出,最好使用64位整型。

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