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显然是错的,没看懂题

Posted by sunmoonstar_love at 2005-08-01 16:19:04 on Problem 1422
In Reply To:这个题直接找出有多少个入度为零的点,行不行?帮忙找个反例,脑子不好使 Posted by:sunmoonstar_love at 2005-08-01 15:59:44


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