you finally wake crazy dream decide walk clear head outside see house fence plain boring you d like repaint you fence consist n plank ith plank color a_i you want repaint fence way ith plank color b_iYouve invite m painter purpose the jth painter arrive moment j recolor exactly plank color c_j for painter choose plank recolor can not turn ie painter color exactly plankCan color b want if possible print painter plank paint