思路：找「右侧第一个 ≤ cur」的元素 → 弹出所有 cur 的元素，栈顶即为折扣。最终价格 = cur - 折扣（有则）或 cur（无则）。
截至目前，第十四届全国人民代表大会实有代表2878人。
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The image comes from a 1997 episode of the Pokémon anime, but it didn't become a viral reaction image until 2018, according to Know Your Meme, when fans began pairing Pikachu’s blank, open-mouthed stare with captions describing obviously avoidable outcomes. It quickly became a universal punchline, transcending Pokémon entirely. Today, Surprised Pikachu isn't just a Pokémon meme. It's internet shorthand.
Mercuriello wondered why there wasn’t a perfectly portioned pasta and sauce kit that wasn’t precooked.
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strict (default): Rejects writes when the buffer is full and too many writes are pending. Catches "fire-and-forget" patterns where producers ignore backpressure.