matrix := [
[3,2,3,0,0,0,1,0,0,0,0,3,0,4,0,3],
[0,2,0,0,0,0,2,4,0,0,0,2,0,4,0,2],
[2,0,0,0,3,0,0,2,0,0,0,1,0,0,0,3],
[0,0,0,0,0,3,2,0,0,0,0,0,0,3,0,2],
[3,0,0,0,0,0,0,1,0,0,0,2,0,1,0,2],
[0,0,0,0,0,0,4,1,3,0,0,3,0,1,0,3],
[0,0,0,0,0,0,1,4,0,3,0,1,0,2,0,0],
[0,0,0,0,0,0,4,1,0,0,3,1,0,0,0,2],
[0,0,0,0,0,0,0,1,0,0,0,2,3,1,0,3],
[0,0,0,0,0,0,4,3,0,0,0,2,0,4,3,4],
[0,0,0,0,0,0,0,3,0,0,0,1,0,3,0,4],
[0,0,0,0,0,0,1,1,0,0,0,4,0,3,0,2],
[0,0,0,3,0,0,0,3,0,0,0,1,0,0,0,2],
[0,0,0,0,0,0,0,0,0,0,0,2,0,3,0,1],
[0,0,0,0,0,0,0,3,0,0,0,4,0,4,0,1],
[0,0,0,0,0,0,3,4,0,0,0,3,0,2,0,1]
]*Z(5);