Envío 2637

Código

/// Write by Daniel Perez .PERAPRO
#include<bits/stdc++.h>

using namespace std;
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
using vi=vector<int>;
#define pb push_back
typedef long long ll;



int main(){
	fast_io;
	int n;
	cin>>n;
	vector<ll> v(n);
	int nn=0;
	ll gn=-1e9-52000000;
	for(int i=0;i<n;i++){
	    cin>>v[i];
	    if(v[i]>=0) nn++;
	    if(v[i]<0) gn=max(gn,v[i]);
	}
	ll suma;
	ll ans=suma=0;
	//cout<<ans<<" "<<suma<<endl;
	for(int i=0;i<n;i++){
	    suma=max(suma+v[i],v[i]);
	    ans=max(suma,ans);
	}
	if(!nn){
	    cout<<gn<<endl;
	    return 0;
	}
	cout<<ans<<endl;
}