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