Untitled

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

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

int main()
{
	ifstream in("func.txt");
	ofstream out("result.txt");
	if (!in.is_open()) throw("404");
	int a;
	in >> a;
	for (int i = 0; i < a; i++) {
		int a, b;
		in >> a >> b;
		out << f(a, b) << endl;
	}
}