Max Sum
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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 integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line starts with a number N(1<=N<=100000), then N integers followed(all the integers are between -1000 and 1000).
Output
For each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line contains three integers, the Max Sum in the sequence, the start position of the sub-sequence, the end position of the sub-sequence. If there are more than one result, output the first one. Output a blank line between two cases.
Sample Input
25 6 -1 5 4 -77 0 6 -1 1 -6 7 -5
Sample Output
Case 1:14 1 4Case 2:7 1 6线性DP;#include<iostream> #include <stdio.h>using namespace std;int a[100010];int main(){ int T,N,i,cas=1; int start,end,temp,sum,max=0;//标记; scanf("%d",&T); while(T--){ scanf("%d",&N); start=end=temp=1; sum=0; max=-1001; for(i=1;i<=N;i++){ scanf("%d",&a[i]); sum+=a[i]; if(sum>max) { max=sum; start=temp; end=i; } if(sum<0){ sum=0; temp=i+1; } } printf("Case %d:\n",cas++); printf("%d %d %d\n",max,start,end); if(T>0) //格式; printf("\n"); } return 0;}
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