Envío 3220

Código

//
#include <bits/stdc++.h>
using namespace std;
#define INF 1000000000
#define MOD 1000000007
#define PI 3.14159265
#define EPS 1e-9
#define Pi acos(-1.0)
typedef pair<int, int> ii;
typedef long long ll;
typedef vector<ll> vll;
typedef pair<ll,ll> pll;
#define forr(i,a,b) for(int i=(a); i<(b); i++)
#define clean(arr,val) memset(arr,val,sizeof(arr))
#define forn(i,n) forr(i,0,n)
#define PB push_back
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vpll;

/*CODE START HERE*/

int n;
ll ans;
vi vec;

// N^2
void sol(){
    ll aux = 0;
    forn(i,n){
        aux = 0;
        forr(j,i,n){
            aux += vec[j];
            ans = max(aux,ans); 
        }
    }
}

int main(){
    ios::sync_with_stdio(0);
    cin >> n;
    vec.assign(n,0);
    forn(i,n){
        cin >> vec[i];
    }
    ans = -INF;
    sol();
    cout << ans << "\n";
    return 0;
}