最大序列和

#include <iostream>
using namespace std;
int a[1000000];

int main(){
    
        
        int N;
        while(cin >> N)
        { 
            int max;
            int sum = 0;
            for (int i = 0; i < N;i++)
            {
                cin >> a[i];
                if (i==0)
                {
                max = a[0];
                }
                sum += a[i];
                if (max<sum)
                {
                    max = sum;
                }
                if (sum<0)//和小于0就清零
                {
                    sum = 0;
                }

            }
            cout << max << endl;
        }
        
    

        system("pause");
        return 0;

}