matrix := [
[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],
[18,9,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0],
[0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0],
[0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10],
[6,15,7,13,15,17,10,15,1,1,6,7,17,10,0,11,0,1],
[16,8,0,3,16,8,0,13,2,16,17,11,18,0,10,6,0,4],
[0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0],
[5,0,12,11,4,18,4,0,5,8,1,1,7,0,0,13,10,4],
[0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0]
]*Z(19);