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…

Aeroplane chess Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) 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 thr…

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…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4405 题意: 你在下简化版飞行棋... 棋盘为一个线段,长度为n. 上面有m对传送门,可以直接将你从a[i]传送到b[i]处. 每扔一次骰子,可以向前移动的步数为骰子的点数. 你的初始位置为0.当位置>=n时,游戏结束. 问你扔骰子次数的期望. 题解: 表示状态: dp[i] = rest steps 位置为i时,剩余需要掷骰子次数的期望. 找出答案: ans = dp[0](初始位置) 如何转移:…

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>…

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 faces with equal probability to face up and the numbers on the faces a…

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…

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 faces with equal probability to face up and the number…

Aeroplane chess Time Limit: 1 Sec  Memory Limit: 32 MB[Submit][Stataus][Discuss] 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 s…

题意 抄袭自https://www.cnblogs.com/Paul-Guderian/p/7624039.html 正在玩飞行棋.输入n,m表示飞行棋有n个格子,有m个飞行点,然后输入m对u,v表示u点可以直接飞向v点,即u为飞行点.如果格子不是飞行点,扔骰子(1~6等概率)前进.否则直接飞到目标点.每个格子是唯一的飞行起点,但不是唯一的飞行终点.问到达或越过终点的扔骰子期望数. 从0出发!! Sol 比较zz的期望dp 设$f[i]$表示从$i$出发,到达$n$的期望步数 转移的时候讨论一下…