Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4512   Accepted: 1988 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually exp…

Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5009   Accepted: 2206 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually exp…

题目链接:点击打开链接 Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 8583   Accepted: 3656 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer…

题意 : 举办一次比赛不容易,为了不让题目太难,举办方往往希望能够讲出的题目满足两点,1是所有的队伍都至少能够解出一个题目,2是冠军队至少能解出确定数量的题目,最后让你求的是每个队伍至少解出一道题并且冠军队伍解出N道题的概率. 思路 : 我觉得吧,搞ACM不容易,唉,概率这玩意儿,一不小心漏掉一个就完啦....首先呢,概率得好好求,其次呢DP得会一些.... 这个题的思路我觉得小优姐的CSDN已经说得很详细了http://blog.csdn.net/lyy289065406/article/de…

概率DP,还是有点恶心的哈,这道题目真是绕,问你T个队伍.m个题目.每一个队伍做出哪道题的概率都给了.冠军队伍至少也解除n道题目,全部队伍都要出题,问你概率为多少? 一開始感觉是个二维的,然后推啊推啊没有推出来,一開始觉得冠军队伍仅仅能有一个.所以必须控制一个队伍解题数比其他队伍多,并且这个冠军队伍解题数必须大于等于n.大于n的时候其他队伍解题数就非常难了,直到坑到最后才发现 原来能够非常多队伍都是冠军,大家都是十道 那么大家都是冠军.---- 然后还是继续推二维,结果还是没想出.看来不是先如果…

以前做过的题目了....补集+DP        Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4091   Accepted: 1811 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult,…

Check the difficulty of problems Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 5830 Accepted: 2542 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually expect…

Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5457   Accepted: 2400 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually exp…

Check the difficulty of problems Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 4522   Accepted: 1993 Description Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually exp…

题目链接: http://poj.org/problem?id=2151 Check the difficulty of problems Time Limit: 2000MSMemory Limit: 65536K 问题描述 Organizing a programming contest is not an easy job. To avoid making the problems too difficult, the organizer usually expect the contes…