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题目不是说只有二元操作符么

Posted by HeadHunter at 2013-05-28 20:45:11 on Problem 1690
In Reply To: 提供一组数据 。。 Posted by:walk_upon at 2011-08-31 12:44:37
Operators in the expressions are only binary '+' and binary '-'.

出现一元的'-'不太科学吧。。。

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