#g2 f1

5x5
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 1 0 0 1
0 -1 0 1 0

5x5
0 0 1 0 0
-1 0 0 1 1
0 -1 0 0 -1
-1 0 0 0 1
1 0 0 0 0

5x5
3 1 -1 -1 -1
1 3 1 -1 1
-1 1 3 1 1
-1 -1 1 3 1
-1 1 1 1 3

2^5*3^2*5 = 1440

