class Cdalele
    def initialize(x,y,dx,dy)
    @x=x
    @y=y
    @dx=dx
    @dy=dy
end
def suolis()
    @x+=rand(-@dx..@dx)
    @y+=rand(-@dy..@dy)
    print "x=", @x, "y=", @y, "\n"
    end
end
dalele = Cdalele.new(5,10,1,1)
dalele.suolis()
dalele.suolis()
dalele.suolis()