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有挺多问题的

Posted by GoRightG at 2006-08-15 10:44:51 on Problem 1183
In Reply To:请教。我得解法是O(n)的。但是不知道哪儿错了。 Posted by:Lucifer at 2005-08-13 18:32:48 
1。b,c都是正整数，也就是数b>=1,c>=1;所以k-sqrtl((unsigned long)(k*k-4*(a*k+1)));要大于0，同时k-sqrtl((unsigned long)(k*k-4*(a*k+1)))/2和k+sqrtl((unsigned long)(k*k-4*(a*k+1)))/2都要是正整数，所以诸b=1/2,c=1/2,b+c=1,但还是会wa.如果要这样做还是比较烦，不推荐！
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