#include <iostream>
#include <math.h>

float negative_temp=0;
float negative_min=0;
float lowpozitive_max=0;
float lownegative_max1=0;
float lownegative_max2=0;
int negative_amount=0;
int pozitive_amount=0;
int zero_amount=0;

int main()
{
    float a[]={-1, -2, -4, -9, -0.3, 0.02, -0.1, 100};
    int N=sizeof(a)/4; //на float выделяется 4 байта

    if (N==1) {std::cout<<a[0]<<'\n'; return 0;}
    else if (N==0) return 0;
    else for (int i=0; i<N; i++)
    {
        if (abs(a[i])>1)
        {
            if (a[i]>0) {std::cout<<a[i]<<'\n'; pozitive_amount++;}
            else
            {
                negative_amount++;
                if (negative_min==0) {negative_min=a[i];}
                else
                {
                    if (negative_min<a[i])
                    {
                        float temp=negative_min;
                        negative_min=a[i];
                        a[i]=temp;
                    }
                    if(negative_temp) {std::cout<<negative_temp<<'\n'<<a[i]<<'\n'; negative_temp=0;}
                    else negative_temp=a[i];
                }
            }
        }
        else if (a[i]>0) {if (a[i]>lowpozitive_max) lowpozitive_max=a[i];}
        else if (a[i]<0)
        {
            if (a[i]<lownegative_max1) lownegative_max1=a[i];
            else if(a[i]<=lownegative_max2) lownegative_max2=a[i];
        }
        else if (a[i]==0) zero_amount++;
    }

    if (!negative_amount && !pozitive_amount)
    {
        if (!lowpozitive_max)
            if (!lownegative_max1)  std::cout<<0<<'\n';
            else if (!lownegative_max2) std::cout<<lownegative_max1<<'\n';
            else std::cout<<lownegative_max1<<'\n'<<lownegative_max2<<'\n';
        else if (lownegative_max1*lownegative_max2<lowpozitive_max)
            std::cout<<lowpozitive_max<<'\n';
        else if (lownegative_max1*lownegative_max2>lowpozitive_max)
            std::cout<<lownegative_max1<<'\n'<<lownegative_max2<<'\n';
    }
    else if (abs(negative_amount%2))
    {
        if (negative_min*lownegative_max1>1) std::cout<<negative_min<<'\n'<<lownegative_max1<<'\n';
        else if (!lownegative_max1 && !pozitive_amount && (negative_amount==1))
            if (!lowpozitive_max) std::cout<<negative_min<<'\n';
            else std::cout<<lowpozitive_max<<'\n';
    }
    else if (negative_temp) std::cout<<negative_temp<<'\n'<<negative_min<<'\n';






    return 0;
}