function zad([x1, y1, x2, y2, x, y]) {

    if ((y == y1 || y == y2) && x <= x2 && x >= x1) {
        console.log("Border");
    }
    else if ((x == x1 || x == x2) && y >= y1 && y <= y2) {
        console.log("Border")
    }
    else {
        console.log("Inside / Outside");
    }
}