题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5013 题意: 思路: 这里有错,是Hi(x)=sigama(Hji)(j属于x) const int N=18; int m,n; double p[N],H[N][N]; double f[N][1<<N]; double dp[N][1<<N]; double a[1<<N],aa[1<<N]; double pp[1<<N],qq[1<&…

1307: City Tour Time Limit: 1 Sec  Memory Limit: 128 MB [Submit][Status][Web Board] Description Alice想要从城市A出发到城市B,由于Alice最近比较穷(不像集训队陈兴老师是个rich second),所以只能选择做火车从A到B.不过Alice很讨厌坐火车,火车上人比较多,比较拥挤,所以Alice有很严格的要求:火车的相邻两站间的最大距离尽可能的短,这样Alice就可以在停站的时候下车休息一下.当…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=1853 Cyclic Tour Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/65535 K (Java/Others) Total Submission(s): 1904    Accepted Submission(s): 951 Problem Description There are N cities in our c…

Cyclic Tour Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/65535 K (Java/Others)Total Submission(s): 1197    Accepted Submission(s): 626 Problem Description There are N cities in our country, and M one-way roads connecting them. Now Li…

Cyclic Tour Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/65535 K (Java/Others)Total Submission(s): 2399    Accepted Submission(s): 1231 Problem Description There are N cities in our country, and M one-way roads connecting them. Now L…

Cyclic Tour Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/65535 K (Java/Others) Total Submission(s): 1879    Accepted Submission(s): 938 Problem Description There are N cities in our country, and M one-way roads connecting them. Now L…

F - City Game Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1505 Appoint description: Description Bob is a strategy game programming specialist. In his new city building game the gaming enviro…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1853 There are N cities in our country, and M one-way roads connecting them. Now Little Tom wants to make several cyclic tours, which satisfy that, each cycle contain at least two cities, and each city b…

City Planning Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 483    Accepted Submission(s): 203 Problem Description After many years, the buildings in HDU has become very old. It need to rebuil…

http://acm.hdu.edu.cn/showproblem.php?pid=5013 m个游客,n座城市(m, n <= 16), 每个人从1走到n, 每次有一定概率停在原地,然后以后就不前进了.一个人到过一个城会得到一定的愉悦度,对于相邻的两座城,会额外产生Cj / Cj - 1 * Hj的愉悦度,Cj是到过j城的人数,Hj是到过j城的人在这里获得的愉悦度之和.求期望的总愉悦度. 根据题解给出的解法 http://blog.csdn.net/oilover/article/detail…