Москвичей предупредили о резком похолодании09:45
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。heLLoword翻译官方下载对此有专业解读
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）。
But doing a perfect job of rendering complex SVG doesn’t do us much good if it slows GTK applications down too much. Recently, we’ve started to look at the performance implications of SVG rendering.