Sum Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5586 Description There is a number sequence A1,A2....An,you can select a interval [l,r] or not,all the numbers Ai(l≤i≤r) will become f(Ai).f(x)=(1890x+143)mod1…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5586 Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 677    Accepted Submission(s): 358 Problem Description There is a number sequence A1,A2...…

Problem Description There is a number sequence A1,A2....An,you can select a interval [l,r] or not,all the numbers Ai(l≤i≤r) will become f(Ai).f(x)=(1890x+143)mod10007.After that,the sum of n numbers should be as much as possible.What is the maximum s…

Problem Description There )mod10007.After that,the sum of n numbers should be as much as possible.What is the maximum sum? Input There are multiple test cases. First line of each ≤n≤) Next line contains n integers A1,A2....An.(≤Ai≤) It's guaranteed t…

Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Problem Description There is a number sequence A1,A2....An,you can select a interval [l,r] or not,all the numbers Ai(l≤i≤r) will become f(Ai).f(x)=(1890x+143)mod1…

Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1706    Accepted Submission(s): 874 Problem Description There is a number sequence A1,A2....An,you can select a interval [l,r] or not,all the…

题意:将数组A的部分区间值按照函数f(Ai)=(1890*Ai+143)mod10007修改值,区间长度可以为0,问该操作后数组A的最大值. 分析:先求出每个元素的增量,进而求出增量和.通过b[r]-b[l-1]求区间增量和,枚举r,而b[l-1]则是b[r]前所有元素的最小值,注意mi初始化为0,因为当前有可能的最优值为区间0~r. #pragma comment(linker, "/STACK:102400000, 102400000") #include<cstdio>…

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题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1003 Max Sum Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others) 问题描述 Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For e…

Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 507    Accepted Submission(s): 284 Problem Description There is a number sequence A1,A2....An ,A1,A2....An ,A1,A2....An ,A1,A2....An ,A1,A2..…