Untitled

#include <fstream>
#include <iostream>
using namespace std;


//ostream &operator<< (ostream& out,const aboba &a) {
//   out << a.name << " " << a.surname;
//   return out;
//}

/*struct TACHKA {
    char cvet;
    int mosh;
    string marka;
    string model;
    int pos;
    float obiom;
    int probeg;
};*/
int f(int a) 
{
   return  a * 2 - 4*a;
}
int y(int b)
{
    return -8 * b + 4;
}
int g(int a, int b) 
{
    
    return  f(a) * a - y(b) * b;
}

int main()
{
    
    ifstream file("baba.txt");
    ofstream res("res.txt");
    int a, b,k;
    file >> k;
    while (k != 0) {
        file >> a >> b;
        k--;
        res << g(a,b) << endl;
        
    }
    
    
  

}