#include<bits/stdc++.h>
using namespace std;
int n,a[105],dp[105],yu;
int main(){
    cin>>n;
    cin>>a[1];
    dp[1]=a[1];
    yu=a[1];
    for(int i=2;i<=n;i++){
        cin>>a[i];
        dp[i]=max(dp[i-1]+a[i],a[i]);
        yu=max(yu,dp[i]);
    }
    cout<<yu;
}
/**************************************************************
	Problem: 1589
	User: huangsheng
	Language: C++
	Result: Accepted
	Time:44 ms
	Memory:2072 kb
****************************************************************/