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Re:我用公式算到是2 * a + sqrt(4 + 4 * a * a)，如果不是整数就再取整加一，但是总得到WA，谁来解释下？In Reply To:我用公式算到是2 * a + sqrt(4 + 4 * a * a)，如果不是整数就再取整加一，但是总得到WA，谁来解释下？ Posted by:yzx at 2007-05-02 20:15:22 因为取sq=sqrt(a*a+1)或是sq=sqrt（a*a+1）+1时，（a*a+1）%sq不一定为0，而题目中数据是整数，且要被整除 Followed by: Post your reply here: |
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