hdu3625 题意: 酒店发生一起谋杀案.作为镇上最好的侦探,您应该立即检查酒店的所有N个房间.但是,房间的所有门都是锁着的,钥匙刚锁在房间里,真是个陷阱!您知道每个房间里只有一把钥匙,并且所有可能的分配可能性均等.例如,如果N = 3,则有6种可能的分布,每种分布的概率为1/6.为方便起见,我们将房间编号从1到N,房间1的键编号为键1,房间2的键编号为2,依此类推.要检查所有房间,您必须用力摧毁一些门.但是您不想破坏太多,因此您采取以下策略:首先,您手中没有钥匙,因此您会随机破坏一扇锁着的门…

Examining the Rooms Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1138    Accepted Submission(s): 686 Problem Description A murder happened in the hotel. As the best detective in the town, yo…

Examining the Rooms Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1661    Accepted Submission(s): 1015 Problem Description A murder happened in the hotel. As the best detective in the town, yo…

与第二类有些区别! #include <stdio.h> #include <stdlib.h> #include <string.h> #include <algorithm> #include <math.h> #include <map> #include <queue> #include <sstream> #include <iostream> using namespace std; #…

@(HDU)[Stirling數] Problem Description A murder happened in the hotel. As the best detective in the town, you should examine all the N rooms of the hotel immediately. However, all the doors of the rooms are locked, and the keys are just locked in the…