链接:https://www.nowcoder.com/acm/contest/156/F 来源:牛客网 题目描述 题目背景编不下去了 托米有一棵有根树 T, 树根为1,每轮他会在剩下的子树中等概率一个点 u, 砍掉 u 的子树 (包含 u),如果树上的点都被砍光了,游戏结束. 求出这个游戏进行的期望轮数,可以证明这个数一定是有理数,设他为 , 你需要告诉他一个整数 x 满足 输入描述: 第一行输入一个数 n, 表示 T 的点数,下面 n- 行给出了 T 的每条边 输出描述: 一行一个整数表示答
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class RpgGame { public string user ; public int atk; public int def; public int hp; #region/登录 public void Login() { Console.WriteLi
4950 Monster Monster Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 52 Accepted Submission(s): 29 Problem Description Teacher Mai has a kingdom. A monster has invaded this kingdom, and Teacher Mai
D. Vanya and Computer Game Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/492/problem/D Description Vanya and his friend Vova play a computer game where they need to destroy n monsters to pass a level. Vanya's character pe