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CodeForces 682C Alyona and the Tree 搜索
题目描述：Alyona decided to go on a diet and went to the forest to get some apples. There she unexpectedly found a magic rooted tree with root in the vertex 1, every vertex and every edge of which has a num
顶部缓冲下拉菜单导航特效的JS代码
复制代码 代码如下:<script type="text javascript"> $(function() { var d=300; $( navigation a) each
