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PRIM不行吧？看下这个数据

Posted by YA_ME_DE at 2009-05-03 19:36:29 on Problem 2253 
6
5 5
100 100
4 4
3 3
2 2
1 1

要是用PRIM的话它不就使劲往左下扩展，然后最后一次跳会从1 1跳到100 100 ，显然比其它点跳到100 100 用得多啊。。。

菜鸟一个，请指教。。。
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