DP + 单调队列优化 + 平衡树 好题 Description Given an integer sequence { an } of length N, you are to cut the sequence into several parts every one of which is a consecutive subsequence of the original sequence. Every part must satisfy that the sum of the intege
Currency Exchange Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 22123 Accepted: 7990 Description Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and pe
我搜索了一下,找到了一篇很好的博客,讲的挺详细:链接. 解析 多重背包的最原始的状态转移方程: 令 c[i] = min(num[i], j / v[i]) f[i][j] = max(f[i-1][j-k*v[i]] + k*w[i]) (1 <= k <= c[i]) 这里的 k 是指取第 i 种物品 k 件. 如果令 a = j / v[i] , b = j % v[i] 那么 j = a * v[i] + b. 这里用 k 表示的意义改变, k 表示取第 i 种物品的件数比
题目连接:http://acm.hdu.edu.cn/showproblem.php?pid=2490 Parade Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 902 Accepted Submission(s): 396 Problem Description Panagola, The Lord of city F lik