fn first(a, b: int): int {
    return a;
}

fn second(a, b: int): int {
    return b;
}


fn last(a, b, c: int): int {
       return c;
}


fn middle(a, b, c: int): int {
       return last(a, c, b);
}


fn first(a, b, c: int): int {
       return middle(b, a, c);
}


first(1, 2, 3);
var x = first(second(1, 2), 3);