题目链接:http://poj.org/problem?id=2479
Description
Input
Output
Sample Input
1 10 1 -1 2 2 3 -3 4 -4 5 -5
Sample Output
13
Hint
Source
代码如下:
#include <cstdio> #include <iostream> using namespace std; #define INF 0x3fffffff #define M 100000+17 int a[M],b[M]; int main() { int n, i, T; while(~scanf("%d",&T)) { while(T--) { scanf("%d",&n); int sum = 0, MAX = -INF; for(i = 1; i <= n; i++) { scanf("%d",&a[i]); sum+=a[i]; if(sum > MAX) { MAX = sum; } b[i] = MAX; if(sum < 0) { sum = 0; } } MAX = -INF; sum = 0; int ans = MAX, t; for(i = n; i > 1; i--) { sum+=a[i]; if(sum > MAX) { MAX = sum; } t = MAX + b[i-1]; if(t > ans) { ans = t; } if(sum < 0) { sum = 0; } } printf("%d\n",ans); } } return 0; }
poj2479 && poj2593Maximum sum(求两个不相交最大字段的和),布布扣,bubuko.com
poj2479 && poj2593Maximum sum(求两个不相交最大字段的和)
原文:http://blog.csdn.net/u012860063/article/details/37728983