#include
#include
using namespace std;

struct fun_lin
{
double a,b;
};

fun_lin wpr()
{
fun_lin parametry;
cin >> parametry.a >> parametry.b;
return parametry;
}

void wypisz(fun_lin parametry)
{

cout << parametry.a << " " << parametry.b;
}

double zero(fun_lin parametry)
{
//-b/a
return -parametry.b/parametry.a;
}

double wart(fun_lin parametry, double punkt)
{
//y=ax+b
return parametry.a * punkt + parametry.b;
}

int main()
{
fun_lin abcde;

abcde = wpr();

cout << endl <
cout << zero(abcde);

cout << endl <
cout << wart(abcde, 1);

//wypisz(abcde);

system ("PAUSE");
return 0;
}