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