2017-09-06 21:32:22 writer:pprp 可以作为一个模板 /* @theme: hdu1003 Max Sum @writer:pprp @end:21:26 @declare:连续区间最大和 @data:2017/9/6 */ #include <bits/stdc++.h> using namespace std; int main() { //freopen("in.txt","r",stdin); int cas; cin…

事实上这连续发表的三篇是一模一样的思路,我就厚颜无耻的再发一篇吧! 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 ---------------------------------------------------------------------------------------------------------------------------------------------------------- 欢迎光临天资小屋:…

  A - 最大子段和 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u   Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in…

Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14.   Input The first line of the input contai…

Max Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 193355 Accepted Submission(s): 45045 Problem Description Given a sequence a[1],a[2],a[3]--a[n], your job is to calculate the max sum of a su…

Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14.   Input The first line of the input contai…

Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14.                       Input The first line of the…

最近想学DP,锻炼思维,记录一下自己踩到的坑,来写一波详细的结题报告,持续更新. 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the…

https://vjudge.net/problem/HDU-1003 注意考虑如果全为负的情况,特判. 还有输出格式,最后一个输出不用再空行. #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<cstdlib> #include<cmath> #define lson l, m, rt<<1 #define…

题目链接:https://vjudge.net/problem/HDU-1003 题目大意:给出一段序列,求出最大连续子序列之和,以及给出这段子序列的起点和终点. 解题思路:最长连续子序列之和问题其实有很多种求解方式,这里是用时间复杂度为O(n)的动态规划来求解. 思路很清晰,用dp数组来表示前i项的最大连续子序列之和,如果dp[i-1]>=0的话,则dp[i]加上dp[i-1]能够使dp[i]增大:若dp[i-1]<0的话,则重新以dp[i]为起点,起点更新. #include <cs…

题目大意:给定序列个数n及n个数,求该序列的最大连续子序列的和,要求输出最大连续子序列的和以及子序列的首位位置 解题思路:经典DP,可以定义dp[i]表示以a[i]为结尾的子序列的和的最大值,因而最大连续子序列及为dp数组中的最大值.   状态转移方程:dp[1] = a[1]; //以a[1]为结尾的子序列只有a[1]:  i >= 2时, dp[i] = max( dp[i-1]+a[i],  a[i] ); dp[i-1]+a[i] > a[i]时,即dp[i-1](以a[i-1]为结尾…

解题思路:最大连续和,此题多了记录的下标,具体见代码. #include<cstdio> #include<algorithm> using namespace std; #define inf 0x3f3f3f3f int main() { , s, e, a; scanf("%d", &t); int tmp = t; while(t--) { scanf("%d", &n); s = e = k = ; sum = ,…

转载请注明出处,谢谢:http://www.cnblogs.com/KirisameMarisa/p/4302208.html   ---by 墨染之樱花 dp是竞赛中常见的问题,也是我的弱项orz,更要多加练习.看到邝巨巨的dp专题练习第一道是Max Sum Plus Plus,所以我顺便把之前做过的hdu1003 Max Sum拿出来又做了一遍 HDU 1003 Max Sum 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1003 题目描述:…

Max Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 207989 Accepted Submission(s): 48681 Problem Description Given a sequence a[1],a[2],a[3]--a[n], your job is to calculate the max sum of a su…

Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 287192    Accepted Submission(s): 68202 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max su…

Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than k. Example: Given matrix = [ [1, 0, 1], [0, -2, 3] ] k = 2 The answer is 2. Because the sum of rectangle [[0, 1], […

题目链接:http://acm.hust.edu.cn/vjudge/contest/126708#problem/J 题意:求一段子的连续最大和,只要每个数都大于0 那么就会一直增加,所以只要和0 比较就行,如果加上一数小于0了那么肯定要重新开始找,否则就不断更新最大值就行 AC代码: #include<stdio.h> #include<string.h> ]; int main() { int t,a,i,max,n,sum,start,ends,f; scanf("…

Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14. Input The first line of the input contains an inte…

A - Max Sum Plus Plus Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1024 Appoint description: Description Now I think you have got an AC in Ignatius.L's "Max Sum" problem. To be a bra…

Max Sum Plus Plus Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 25639    Accepted Submission(s): 8884 Problem Description Now I think you have got an AC in Ignatius.L's "Max Sum" problem.…

测试样例之间输出空行,if(t>0) cout<<endl; 这样出最后一组测试样例之外,其它么每组测试样例之后都会输出一个空行. dp[i]表示以a[i]结尾的最大值,则:dp[i]=max(dp[i]+a[i],a[i]) 解释: 以a[i]结尾的最大值,要么是以a[i-1]为结尾的最大值+a[i],要么是a[i]自己本身,就是说,要么是连同之前的 构成一个多项的字串,要么自己单独作为一个字串,不会有其他的可能了. 状态规划的对状态的要求是:当前状态只与之前的状态有关,而且不影响下一…

A. Max Sum Plus Plus Now I think you have got an AC in Ignatius.L's "Max Sum" problem. To be a brave ACMer, we always challenge ourselves to more difficult problems. Now you are faced with a more difficult problem. Given a consecutive number seq…

Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the m…

Max Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 211310    Accepted Submission(s): 49611 Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max su…

Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than k. Example: Given matrix = [ [1, 0, 1], [0, -2, 3] ] k = 2 The answer is 2. Because the sum of rectangle [[0, 1], […

http://acm.hdu.edu.cn/showproblem.php?pid=1024 Max Sum Plus Plus Problem Description Now I think you have got an AC in Ignatius.L's "Max Sum" problem. To be a brave ACMer, we always challenge ourselves to more difficult problems. Now you are fac…

题目大意:求一串数字中,几个连续数字加起来最大值,并确定起始和最末的位置. 思路:这是一题DP题,但是可以用尺取法来做.我一开始不会,也是看了某大神的代码,然后有人告诉我这是尺取法,现在会了. //尺取法 #include<stdio.h> #include<string.h> ]; main() { int t,flag; scanf("%d",&t); flag=t; while(t--) { memset(que,,sizeof(que)); ;…

#include <stdio.h> int main(){ int i,t,j,n,x; int start,end,temp,max,sum; scanf("%d",&t); ;i<t;i++){ temp=; max=-; sum=; scanf("%d",&n); ;j<n;j++){ scanf("%d",&x); sum+=x; if(sum>=max){ max=sum; sta…

HDU 1024 题目大意:给定m和n以及n个数,求n个数的m个连续子系列的最大值,要求子序列不想交. 解题思路:<1>动态规划,定义状态dp[i][j]表示序列前j个数的i段子序列的值,其中第i个子序列包括a[j], 则max(dp[m][k]),m<=k<=n 即为所求的结果 <2>初始状态: dp[i][0] = 0, dp[0][j] = 0; <3>状态转移: 决策:a[j]自己成为一个子段,还是接在前面一个子段的后面 方程: a[j]直接接在前面…

HDU 1003    相关链接   HDU 1231题解 题目大意:给定序列个数n及n个数,求该序列的最大连续子序列的和,要求输出最大连续子序列的和以及子序列的首位位置 解题思路:经典DP,可以定义dp[i]表示以a[i]为结尾的子序列的和的最大值,因而最大连续子序列及为dp数组中的最大值.   状态转移方程:dp[1] = a[1]; //以a[1]为结尾的子序列只有a[1]:  i >= 2时, dp[i] = max( dp[i-1]+a[i],  a[i] ); dp[i-1]+a[i…