题目看不懂啊!!!

P1244 [NOI2000] 青蛙过河

@[小跳蛙](/space/show?uid=44805) 快来过河!
by pzc2004 @ 2019-08-08 08:21:48


@[wemspzc](/space/show?uid=60075) dalao求指教!!
by xrk666 @ 2019-08-08 08:24:17


![](http://images2015.cnblogs.com/blog/1022747/201609/1022747-20160916163626883-1898155526.jpg)
by xyf007 @ 2019-08-08 08:24:39


@[wemspzc](/space/show?uid=60075) 我不会跳,也不会游泳
by Leap_Frog @ 2019-08-08 08:25:57


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