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有路过的请看下这组数据!!

Posted by 201321131067 at 2015-10-21 15:18:06 on Problem 1860 and last updated at 2015-10-21 15:18:47
4 3 1 20
1 3 1.0 1.0 1.0 1.0
1 2 1.01 1.0 1 0.01
3 2 1.02 1.0 1.02 1.0


我觉得如果按1-〉2->3->2->1 是可以YES的
网上得出NO结果的过了,我得出YES的WA了??

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