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