matrix := [
[5,9,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,10,0,0,0,0,0,0,0,0,0,0,0,0],
[15,7,14,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,10,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,10,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,10,0,0,0,0,0,0,0],
[0,0,0,10,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,10,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,10,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,10,0,0],
[0,0,0,0,0,10,0,0,0,0,0,0,0,0,0],
[8,4,6,14,15,3,4,8,10,17,11,2,3,4,2],
[1,16,8,10,16,6,5,7,17,3,4,16,12,0,9],
[16,7,9,9,12,6,10,1,9,14,10,5,10,10,9],
[17,15,16,9,0,16,17,12,6,17,18,9,7,14,14]
]*Z(19);