ProdMax1_SIMPLU

#include <iostream>
using namespace std;

int main()
{
    int n,x,Max1=-1000001,Max2=-1000001,Min1=1000001,Min2=1000001;
    cin>>n;
    for(int i=0;i<n;++i)
    {
        cin>>x;
        if(x>Max1)
            Max2=Max1,Max1=x;
        else
            if(x>Max2)
                Max2=x;
        if(x<Min1)
            Min2=Min1,Min1=x;
        else
            if(x<Min2)
                Min2=x;
    }
    if((long long)Min1*Min2>(long long)Max1*Max2)
        cout<<(long long)Min1*Min2;
    else
        cout<<(long long)Max1*Max2;
    return 0;
}