#include <iostream>
#include <fstream>

using namespace std;
//5 -6 3 4 -2 3 -3
int main()
{
    ifstream fin("ssm.in");
    ofstream fout("ssm.out");

int a[8],i,j,s=0,n,maxim=-1000;
fin>>n;
for(i=1;i<=n;i++)
        fin>>a[i];
for(i=1;i<=n;i++)
{
    s=a[i];
    for(j=i+1;j<=n;j++)
    {
        s=s+a[j];
    if(maxim<s)
        maxim=s;
    }
}
fout<<maxim;
fin.close();
fout.close();
}