http://codeforces.com/problemset/problem/348/B 注意到如果顶点的数值确定了,那么它分下去的个数也就确定了,那么可以暴力枚举顶点的数值. 顶点的数值是和LCM相隔的,LCM就是,比如1有三个子节点,那么1的数值起码都是3的倍数,不然不能整除. 同理,1有三个儿子2.3.4.,如果3有三个儿子,那么1就要起码是9的倍数了,因为需要分给3的时候至少是3. 所以算出整颗树的LCM,叶子节点LCM是1,其他的LCM = lcm(所有子节点) * son[cur…

  http://codeforces.com/contest/348/problem/B   B. Apple Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a rooted tree with n vertices. In each leaf vertex there's a sin…

好抽象的树形DP......... Apple Tree Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6411 Accepted: 2097 Description Wshxzt is a lovely girl. She likes apple very much. One day HX takes her to an apple tree. There are N nodes in the tree. Each nod…

Apple Tree Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 18623   Accepted: 5629 Description There is an apple tree outside of kaka's house. Every autumn, a lot of apples will grow in the tree. Kaka likes apple very much, so he has been…

Apple Tree Time Limit: 2000MS   Memory Limit: 65536K       Description There is an apple tree outside of kaka's house. Every autumn, a lot of apples will grow in the tree. Kaka likes apple very much, so he has been carefully nurturing the big apple t…

Apple Tree Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 26762   Accepted: 7947 Description There is an apple tree outside of kaka's house. Every autumn, a lot of apples will grow in the tree. Kaka likes apple very much, so he has been…

                                                          Apple Tree Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 27470   Accepted: 8140 Description There is an apple tree outside of kaka's house. Every autumn, a lot of apples will gr…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=102419#problem/C Description I’ve bought an orchard and decide to plant some apple trees on it. The orchard seems like an N * M two-dimensional map. In each grid, I can either plant an apple tree…

Apple Tree Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 25904   Accepted: 7682 Description There is an apple tree outside of kaka's house. Every autumn, a lot of apples will grow in the tree. Kaka likes apple very much, so he has been…

Let's imagine how apple tree looks in binary computer world. You're right, it looks just like a binary tree, i.e. any biparous branch splits up to exactly two new branches. We will enumerate by integers the root of binary apple tree, points of branch…