#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];
    }
    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: caijiajie
	Language: C
	Result: Compile Error
****************************************************************/