Untitled

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

int f(int a, int b)
{
    return a * a - 5 * b;
}

int main()
{
    ifstream in("func.txt");
    ofstream out("result.txt");
    int a, b;
    int n;
    in >> n;

    for (int i = 0; i < n; i++)
    {
        in >> a >> b;
        out << f(a,b) << endl;
    }
}