I cant understand the problem statement.
please explain it to me.
sorry for my poor english!!!

This problem very similar to problem #1060 from this site. The only difference bewtween them - at the 1060 we must flip 4 neighbors(up,down,left,right), here we must flip only those neighbors, who described with flip-mask(3x3 matrix). BTW, if flip-mask wiil be
010
111
010, solution will be completely the same with solution of 1060!