Hasbullah decided to test his memory and attentiveness. You are in a new exciting online game Hasbulla Memory to join him in this entertainment. In front of you on the screen you will see the playing field on which there will be several cards. In one move, you can click on any two cards. This way you will turn them over and look at the images on them. Then the cards will return to their original state and you will make your move again. Your task is to find two identical images and open the cards on which they are depicted at the same time. As soon as you do this, these cards will disappear from the playing field and for this you will be given points in the Hasbulla Memory game.