row_ops=[0, 0, 1, 1, 1] col_ops=[1, 2, 2, 3, 4]
op=Operation(is_row=False, index=6, color=0), row_ops[i]=0
op=Operation(is_row=False, index=4, color=7), row_ops[i]=0
op=Operation(is_row=True, index=0, color=7), col_ops[i]=2
op=Operation(is_row=False, index=8, color=2), row_ops[i]=1
op=Operation(is_row=False, index=0, color=9), row_ops[i]=1
1 0 0 0 0 0 0 9 0 0