让我们来分解一下：<start_function_call — 函数调用开始，call: — 前缀，change_background_color — 函数名，{color:<escapered<escape} — 带转义标记的参数，<end_function_call — 函数调用结束。
Number (3): Everything in this space must add up to 3. The answer is 2-2, placed vertically; 1-0, placed vertically.
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The release of the first-ever Lego Pokémon sets has naturally caused a stir. Whether or not you like what you see, you just know that these sets are going to sell like mad. We regularly see huge interest in anything released by Lego and Pokémon, so any sort of collaboration between these two brands was always going to send the world into a frenzy.
* 核心思路：倒序单调栈（适配你的学习习惯），时间复杂度O(n)，空间复杂度O(n)
From Pokémon Day (Feb. 27), Lego Insiders can redeem 2,500 Lego Insiders points for the brand-new Mini Pokémon Center. This member-exclusive build is filled with mini-scale details inspired by all the different versions of the Pokémon Center from the Pokémon games, including sliding doors that open and close using lever functions, a healing station, seating area, and PC. It's recommended for ages 18+ and contains 233 pieces.