I have a solution for this problem. Check my code when solved.

i also think testcases are wrong

i m unable to spot the error in this code so plz help.........my code is-----#include

int main() {
    int i,t,n;
    long int a[1000],b[1000],m_sum1=0,m_sum2=0;
    long long int sum=0;
    scanf("%d",&t);
    while(t--)
        {
        scanf("%d",&n);
        for(i=0;i<n;i++)
            scanf("%ld",&a[i]);
        for(i=0;i<n;i++)
            scanf("%ld",&b[i]);
       for(i=0;i<n;i++)
           {
           if(a[i]>0) m_sum2 +=a[i];
           else    m_sum1+=a[i];
       }
           if(m_sum2>(-1*m_sum1)) sum=m_sum2*m_sum2;
           else
               sum=m_sum1*m_sum1;
       m_sum1=0;m_sum2=0;

        for(i=0;i<n;i++)
        {
             if(b[i]>0) m_sum2 +=b[i];
           else  m_sum1+=b[i];
        }
           if(m_sum2>(-1*m_sum1)) sum+=m_sum2*m_sum2;
           else
               sum+=m_sum1*m_sum1;


printf("%lld",sum);

    }

    /* Enter your code here. Read input from STDIN. Print output to STDOUT */    
    return 0;
}