matrix := [
[0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,15,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,15,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,15,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,15,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,15,0,0,0,0,0,0,0],
[0,0,0,0,0,0,15,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,15,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,15,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,15,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,15],
[0,0,0,0,0,0,0,0,0,0,15,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,15,0,0,0,0,0],
[28,1,23,6,12,17,17,19,12,10,28,2,0,1,27,15,0],
[0,0,0,0,0,0,0,0,0,0,0,0,15,0,0,0,0]
]*Z(29);