Problem Mussuk is playing RPG. The game has an up, down, left, right rudder, and when you press each key, you move up, down, left, and right. For example, if you press up at [0,0], the coordinates of the character are [0,1], if you press down, [0,-1], if you press left, [-1,0], if you press right, [1,0]. The parameters are given the array keyinput of the arrow keys entered by the awkward and the..
