* - this.stack：单调递减栈，存储「价格对应的索引」，栈顶→栈底索引对应的价格单调递减
"It is really, really hard," he said.
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Google has launched its new image generation model, the Nano Banana 2, which is powered by Gemini 3.1 Flash Image. The company says the new model has the capabilities, world knowledge and reasoning of Nano Banana Pro, but it can accomplish tasks at “lightning-fast speed.” That enables rapid editing and the quick creation of various iterations using a single prompt.。safew官方版本下载对此有专业解读