n=50;
random=[607,420,321,67,40,20,89,301,407,135,15,4,447,241,89,301,407,515,410,321,120,40,321,667,400,321,67,40,209,89,301,407,15,499,440,240,89,301,407,515,40,321,637,410,20,8,301,407,15,49];