matrix := [ [1,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0], [6,1,5,0,4,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5], [1,2,1,6,4,0,1,2,0,1,3,0,3,2,3,0,1,2,3,1,6,0], [2,5,4,0,6,0,4,4,0,0,6,1,1,3,2,5,2,4,6,6,2,3], [4,4,4,2,4,3,1,5,6,5,5,3,5,4,3,0,0,4,6,5,2,1], [1,6,4,0,1,6,0,1,1,4,3,4,3,3,4,0,5,6,6,4,0,0], [3,4,0,2,0,5,4,2,3,0,3,6,0,3,3,6,1,6,6,0,5,0], [3,2,4,6,3,3,6,5,4,0,5,6,5,4,4,3,1,1,5,3,1,0], [0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] ]*Z(7);