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这题的一个结论?请问各位大神

Posted by wanglangzhe at 2016-07-05 00:33:09 on Problem 2130
我看到有解题报告说有一个性质是最优解里不会出现中途从一条路上下来然后走路跑到另外一条路上,但是我觉得这个性质显然不成立啊?还是我题意理解错了

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