matrix := [
[4,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0],
[6,3,1,5,1,2,1,1,4,0,4,5,6,6,5,6,6,0,3,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5],
[3,4,0,5,0,0,1,0,0,0,0,0,3,0,0,0,0,0,0,0,0],
[6,0,4,2,5,1,1,0,0,0,6,1,0,1,2,0,6,5,4,1,4],
[1,6,2,5,4,0,6,0,1,2,0,5,3,4,6,6,5,5,0,3,4],
[5,1,2,3,0,5,4,4,5,3,5,5,3,6,4,0,5,1,0,0,1],
[1,6,3,1,0,5,2,4,4,4,5,4,6,6,6,6,2,2,4,6,0],
[5,1,6,5,2,5,4,6,2,3,3,6,5,1,4,5,1,6,2,6,3],
[3,2,2,3,3,3,4,1,1,5,0,6,6,0,6,1,3,1,1,2,4],
[1,0,5,1,6,1,5,4,2,1,1,2,0,5,0,1,3,1,6,0,5],
[2,3,6,6,6,4,0,0,4,0,5,3,2,6,3,3,0,6,3,3,6]
]*Z(7);