In the Wild West there was once a very popular pastime. On the head of one of the cowboys was set a glass bottle, and another cowboy tried to shoot it down. Fun is pretty harmless, of course, if the one who shoots will not overshoot the bottle and will not please his friend right in the head. Then similar incidents was fairly uncommon, but what is happening now will experience. Fortunately, you as the shooter.
Your task is to accurately aim and shoot down only the bottle, without damaging the heads of the cowboy.