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