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答案可能为非整例如: 3 3 1 2 1 3 2 3 1 3 1 3 1 3 1 1 1 输出为4.5 不过测试数据里没有答案非整的 还有可能有自环吗,自环对于一个点的贡献是不是2x(e)? Followed by: Post your reply here: |
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