p = [(0,0), (0,-3), (-3,0), (-3,-1), (0,3), (-1,2), (-3,1), (-2,3), (-4,-4),(-2,6), (2,1), (2,-2), (2,-6), (3,6), (9,4), (5,-5), (11,2), (-8, -3), (-6,5), (0,10), (10,2), (2,10), (12,4), (-4,-10), (3,8)]