题目链接:https://vjudge.net/problem/HDU-4283 You Are the One Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4667    Accepted Submission(s): 2218 Problem Description The TV shows such as You Are the…

//Accepted 300 KB 0 ms //区间dp //dp[i][j] 表示i到j第一个出场的最小diaosizhi //对于i到j考虑元素i //(1)i第一个出场,diaosizhi为 dp[i+1][j]+sum(i+1--j) //(2)i不是第一个出场,而是第k个出场,则i+1到k+i-1这段区间第一个出场,k+i到j第k+1个出场 //diaoshizhi为dp[i+1][i+k-1] + a[i]*(k-1) + (dp[i+k][j]+k*sum(i+k--j)) //…

Problem Description The TV shows such as You Are the One has been very popular. In order to meet the need of boys who are still single, TJUT hold the show itself. The show is hold in the Small hall, so it attract a lot of boys and girls. Now there ar…

题目连接:http://acm.hdu.edu.cn/showproblem.php?pid=4283 题意:有一个队列,每个人有一个愤怒值D,如果他是第K个上场,不开心指数就为(K-1)*D.但是边上有一个小黑屋(后进先出,当成个堆栈),可以一定程度上调整上场顺序,使不开心指数最小. 分析:最先进栈的元素最后出栈,例如第i个元素入栈,如果它最终的位置是在k,那么i 到 k 这一段中不可能有 k 位置后的数出现.因此把问题[l,r]分为子问题[l+1,k].[k+1,r]. #include <…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4283 自己想了很久还是不会,参考了别人的思路才写的,区间DP还是很弱,继续努力!! 思路: 转载: 题解:想dp[i][j]表示[i ,j]内的unhappiness最小值,枚举k(i<=k<j),有两种情况需要讨论:          1 如果[i , k]区间内的人全部在[k+1, j]区间内的人之前出列,且已经全部不在栈中,即[i , j]区间可以分为[i , k] , [k+1 ,j]两个…

You Are the One Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3915    Accepted Submission(s): 1809 Problem Description The TV shows such as You Are the One has been very popular. In order to m…

题意:n个人排队上台,每个人有一屌丝值D,他的不满意值=D*(k-1)(k为他前面的总人数). 求整个队列不满意值之和的最小值.你只有一个操作,就是把队首的人塞进小黑屋,也就是压入栈中,后面的人就被提前了. 题解:首先考虑压入栈的性质:对于第1个人,他可以任意第几位上台.若他是第k个上台,则2~k必定 已经上台(因为这些人要么直接上台,要么压在1号上面),所以K+1~n一定还没上台.于是1~n的不满意值便被分解成了两个子问题:(2~k的不满意值)+(K+1~n的不满意值)+第一个人的不满意值.…

传送门 题目 The TV shows such as You Are the One has been very popular. In order to meet the need of boys who are still single, TJUT hold the show itself. The show is hold in the Small hall, so it attract a lot of boys and girls. Now there are n boys enro…

题目: The TV shows such as You Are the One has been very popular. In order to meet the need of boys who are still single, TJUT hold the show itself. The show is hold in the Small hall, so it attract a lot of boys and girls. Now there are n boys enrolli…

You Are the One Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 6113    Accepted Submission(s): 2982 Problem Description The TV shows such as You Are the One has been very popular. In order to…

参考博客:https://blog.csdn.net/my_sunshine26/article/details/77141398 https://blog.csdn.net/qq_38569113/article/details/78718930 dp[l][r]通常由子区间dp[l][k],dp[k+1][r]转移得到 第一类:枚举k即可 如石子合并,poj1651 第二类:在第一类上加条件,即取被选取区间的元素k和l进行比较,这时用l和k进行配对比较,再将区间划分为dp[l+1][k-1]…

一.数位DP 1.含有或不含某个数“xx”: HDU3555 Bomb HDU2089 不要62 2.满足某些条件,如能整除某个数,或者数位上保持某种特性: HDU3652 B-number CodeForces - 55D Beautiful numbers POJ3252 Round Numbers HDU3709 Balanced Number 二.区间DP: 1.由小区间往左右两边扩散: POJ3186 Treats for the Cows ZOJ3469 Food Delivery…