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