题意:给你一棵树,每次可以去掉叶节点的一条边,Ayush先开始,每回合轮流来,问谁可以第一个把\(x\)点去掉. 题解:首先如果\(x\)的入度为\(1\),就可以直接拿掉,还需要特判一下入度为\(0\)的情况,否则,仔细想一想,因为每次都不想让对方赢,所以摘到最后,一定会出现\(x\)连的都是叶
Game On Leaves 题目链接：[https://codeforces.com/contest/1363/problem/C) 涉及知识点： 思维/博弈 solution： 首先我们要知道无根树的概念（就是任何一个节点都能当做根），然后仔细审题 接下来你会发现，无论如何变化，最终和X 有关系的只是，最后两个与X相连的节点， 设置 第一个节点为x1
Ayush and Ashish play a game on an unrooted tree consisting of nn nodes numbered 11 to nn. Players make the following move in turns: Select any leaf node in the tree and remove it together with any edge which has this node as one of its endpoints.
Ayush and Ashish play a game on an unrooted tree consisting of nn nodes numbered 11 to nn. Players make the following move in turns: Select any leaf node in the tree and remove it together with any edge which has this node as one of its endpoints. A leaf
题目描述： Ayush is a cashier at the shopping center. Recently his department has started a ''click and collect" service which allows users to shop online. The store contains k items. n customers have already used the above service. Each user pa
