杭电1003

#include <iostream>
using namespace std;

int main()
{
	int n, m, i, j;
	int a[100001];
	cin>>n;
	int line = 1;
	while (line <= n)
	{	
		cin>>m;
		for (i = 0; i < m; i++)
		{
			cin>>a[i];
		}

		int max = a[0], sum = 0, start = 0, end = 0, lstart = 0;  //下标时从0开始算的,记录第一个值为最大值
		for(j = 0; j < m; j++)
		{
			sum += a[j];

			if (sum > max)     //当和大于之前的值时,更新起点和终点
			{
				max = sum;
				start = lstart;
				end = j;
			}

			if (sum < 0)             //当和小于0时,标记下个起点,因为负数加一个数的结果肯定比那个数小,确定不是最优解,状态更新,从下一个点重新记录
			{
				sum = 0;
				lstart = j+1;
			}
		}

		cout<<"Case "<<line<<":"<<endl;
		cout<<max<<" "<<start+1<<" "<<end+1<<endl;

		if (line < n)
			cout<<endl;
		
		line++;
	}
	return 0;
}

  

原文地址:https://www.cnblogs.com/AC-LG/p/4645526.html