zad 2

abstract class ParaAb{
    type A
    type B
    var fst: A
    var snd: B
    override def toString() = (fst,snd).toString()
}

val pair = new ParaAb{
    type A=Int;
    type B=String;
    var fst=6;
    var snd="kocham paradygmaty";
}