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ZOJ Problem Set - 3365 Integer Numbers Time Limit: 1 Second      Memory Limit: 32768 KB      Special Judge The boy likes numbers. He has a sheet of paper. He have written a sequence of consecutive integer numbers on the sheet. The boy likes them. But…

Integer Numbers Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on ZJU. Original ID: 336564-bit integer IO format: %lld      Java class name: Main Special Judge   The boy likes numbers. He has a sheet of paper. He have written a…

-----------------------------------------n-1条边的无向连通图是一棵树,又因为树上两点之间的路径是唯一的,所以解是唯一的.(注意并不一定是二叉树,所以最好采用存储图的方式存储树,我使用的是邻接表)这个时候只需要考虑如何求解两点间的路径呢?遍历就可以了.但是应该如何遍历呢?比较容易想到的办法是分别从每个点计算到S点的路径,既然它们的终点相同,那为什么不逆向一下干脆从S点向这些点出发呢?所以现在问题就转化为了从S点出发遍历树,OK,这个问题就比较简单了,只需…

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