valToGreater2.set(cur, stack2.length ? stack2.at(-1) : -1);
从顾客视角来看，他们的核心预期很简单：安全、放心、真实透明以及被尊重。很多旺店最大的差评往往是“排队太久且无服务”——同样是排队，海底捞会提供小吃、饮用水，而有些门店让客人在寒风中苦等，自然会引发不满。
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"These videos are making people think this is real life. It's becoming out of hand now," he said.
Wonderfall (@w0nderfall)