题意:有一个n个点的飞行棋,问从0点掷骰子(1~6)走到n点须要步数的期望 当中有m个跳跃a,b表示走到a点能够直接跳到b点. dp[ i ]表示从i点走到n点的期望,在正常情况下i点能够到走到i+1,i+2,i+3,i+4,i+5,i+6 点且每一个点的概率都为1/6 所以dp[i]=(dp[i+1]+dp[i+2]+dp[i+3]+dp[i+4]+dp[i+5]+dp[i+6])/6  + 1(步数加一). 而对于有跳跃的点直接为dp[a]=dp[b]; #include<stdio.h>…

Aeroplane chess Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1503    Accepted Submission(s): 1025 Problem Description Hzz loves aeroplane chess very much. The chess map contains N+1 grids la…

Problem Description Hzz loves aeroplane chess very much. The chess map contains N+ grids labeled to N. Hzz starts at grid . For each step he throws a dice(a dice have six faces with equal probability to face up and the numbers on the faces are ,,,,,)…

题目大意:一个跳棋游戏,每置一次骰子前进相应的步数.但是有的点可以不用置骰子直接前进,求置骰子次数的平均值. 题目分析:状态很容易定义:dp(i)表示在第 i 个点出发需要置骰子的次数平均值.则状态转移方程为: dp(i)=singma(pk*dp(i+k))+1 (如果在 i 处必须置骰子才能前进) dp(i)=dp(s) (如果在 i 处能直接到达s处) 代码如下: # include<iostream> # include<cstdio> # include<vecto…

Hzz loves aeroplane chess very much. The chess map contains N+1 grids labeled from 0 to N. Hzz starts at grid 0. For each step he throws a dice(a dice have six faces with equal probability to face up and the numbers on the faces are 1,2,3,4,5,6). Whe…

Aeroplane chess Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1667    Accepted Submission(s): 1123 Problem Description Hzz loves aeroplane chess very much. The chess map contains N+1 grids lab…

LOOPS Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 125536/65536 K (Java/Others) Total Submission(s): 1864    Accepted Submission(s): 732 Problem Description Akemi Homura is a Mahou Shoujo (Puella Magi/Magical Girl). Homura wants to help h…

http://acm.split.hdu.edu.cn/showproblem.php?pid=4405 Aeroplane chess Problem Description   Hzz loves aeroplane chess very much. The chess map contains N+1 grids labeled from 0 to N. Hzz starts at grid 0. For each step he throws a dice(a dice have six…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=4405 Aeroplane chess Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others) 问题描述 Hzz loves aeroplane chess very much. The chess map contains N+1 grids labeled from 0 to N. Hzz s…

Collecting Bugs Ivan is fond of collecting. Unlike other people who collect post stamps, coins or other material stuff, he collects software bugs. When Ivan gets a new program, he classifies all possible bugs into n categories. Each day he discovers…