#include<bits/stdc++.h>
using namespace std;
int n,a[101],dp[101],m;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	dp[1]=a[1];
	for(int i=2;i<=n;i++){
		dp[i]=max(a[i]+dp[i-1],a[i]);
	}
	for(int i=1;i<=n;i++)
	{
		m=max(m,dp[i]);
	}
	cout<<m;
} 
/**************************************************************
	Problem: 1589
	User: wuyunfeng
	Language: C++
	Result: Accepted
	Time:40 ms
	Memory:2072 kb
****************************************************************/