Omi and matrix

Omi gave Ish a $2$-$D$ matrix $A$ of size $N$ * $N$ and asked him to find a $1$-$D$ matrix $B$ of size $N$ where $A[i][j]$ represents the logical $AND$ of $B[i]$ and $B[j]$. Omi is smart enough and he know that logical $AND$ of a number with itself is that number so he filled the primary diagonal of the matrix with $-1$. As there are many ways to form the matrix $B$, so you have to find the minimu