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直接分支定界好了In Reply To:TLE~~~,莫非要分块统计，然后在求不等式x1+x2+x3+..+xh=k有多少个非负整数解...ps:题目的意思应该是只能站在#上吧，如果同一行有多段#被.隔开,应该也不冲突吧 Posted by:cockhorse at 2006-09-18 20:15:51 Followed by: Post your reply here: |
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