题目大意是给出m个数,用这m个数组成加法等式(等式右边只有1个数)并按顺序(先输出长度小的,长度相同的情况下先输出从左到右数字小的)输出所有可能的等式。如果无法构成等式则输出"Can't find any equations."。
我是用DFSID来做的。先对输入数据排序,求出最大可能深度,然后限制深度进行DFS就是了,剪枝方面我只用了一个最基本的判定可行性的剪枝。
2993372 2008-07-21 13:25:03 Accepted 1204 FPC 00:00.68 412K IwfWcf@LZOI
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