You work as a loader at the factory of toys and your duty - is to collect boxes of toys laying on the truck. However, the packaging conveyor has broken toys and now you have to ship all with a crane, pre-guessing the contents of the box. At your disposal is only twenty hearts, through which your business lives. If you start shipping two boxes with different contents, the number of heart decreases. If it turns out to pick up two boxes of identical toys - then increases.
