Walk I used to think I could be anything, but now I know that I couldn't do anything. So I started traveling. The nation looks like a connected bidirectional graph, and I am randomly walking on it. It means when I am at node i, I will travel to an ad…
Walk Time Limit: 30000/15000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 266 Accepted Submission(s): 183 Special Judge Problem Description I used to think I could be anything, but now I know that I couldn't d…
解题思路:这是一道简单的概率dp,只要处理好相关的细节就可以了. dp[d][i]表示走d步时走到i的改概率,具体参考代码: #include<cstdio> #include<cstring> #include<algorithm> #include<vector> #include<cstring> using namespace std; ; ; double dp[N][M]; int n, m, t, d; vector<int&…
Walk Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5001 Description I used to think I could be anything, but now I know that I couldn't do anything. So I started traveling. The nation looks like a connected bid…
A - Robberies Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 2955 Appoint description: Description The aspiring Roy the Robber has seen a lot of American movies, and knows that the bad guys usu…
Passage Problem Description Bill is a millionaire. But unfortunately he was trapped in a castle. There are only n passages to go out. For any passage i (1<=i<=n), Pi (0<=Pi<=1) denotes the probability that Bill will escape from this castle saf…
