In your city attacked the huge hordes of zombies, and no one to protect his people, except you. Rather, take up arms, occupies a prime position and start to engage in the elimination of bloodthirsty monsters. At your disposal very little ammunition, and the number of zombies increases with each stage of liberation. Now you have to count the shots so that your ammunition enough for all the zombies without exception. Help you absolutely anyone, so include logical thinking before you start shelling.