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不理解

Posted by yaya_ke at 2008-10-30 20:37:51 on Problem 3498 
请教下
先谢谢了

第一组测试数据怎么出来的呀，3，5，为什么不行呢

3不是可以的吗
1->2->3
5->3


5也不是可以的吗：
1->2->5
3->5

每个冰块对于每只企鹅都只跳了一次啊
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