Stable Diffusion (Easy)

**This is the easy version of the problem STDIF. The only difference between them is the constraint on $N$: here, $N$ and the sum of $N$ won't exceed $300$.** Suppose you have an array $A$ of length $M$. Every element of $A$ is either $1$ or $2$. Consider another array $B$ of length $M$. Initially, $B_i = 0$ for all $i$. You can perform the following operation: - Choose an index $i$ ($1 \leq i