matrix := [
[17,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[15,11,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0],
[0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0],
[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],
[12,2,10,11,14,1,1,8,16,3,11,7,10,13,15,5,10,10,6],
[0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0],
[11,16,0,18,11,12,6,15,14,18,16,0,10,12,6,12,3,11,7],
[0,0,0,0,0,0,0,0,0,10,0,0,0,0,0,0,0,0,0],
[6,9,1,5,15,12,7,15,11,0,4,14,16,18,3,7,6,13,11]
]*Z(19);