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