极度无语的一题，题目数据明显有错，按照题目描述应该是由指定点出发的哈密顿最短链的模型，标准解法是DP，不过题目的数据却是从任一点出发的哈密顿最短链，也就是最小生成树（由于本题的数据保证所有点可以构成凸包，所以也是周长减最大边）......
R1077150 Accepted 100 From IwfWcf P1069 FPC Vivid Puppy 2008-11-26 13:31:59
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