Mystic Slimes

There are $N$ mystic slimes arranged in a line, and the power of the $i$-th slime is $A_i$. You need to perform the following operations until only one slime remains: - Choose two adjacent indices $i$, $j$ ($1 \leq i, j \leq |A|$, $|i - j| = 1$), and let the $i$-th slime eat the $j$-th slime. After this operation, the power of the $i$-th slime becomes $\max(0, A_i - A_j)$ (while the $j$-th slime