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I don't care what people say about me, I know who I am.

The beauty of cinema lies in its ability to evoke emotions without words.

The goal of mathematics is to understand the structures that underlie the phenomena we observe.

一個問題如果在計算機上可以快速解決，那么它屬于P類問題；如果一個解可以快速驗證，那么它屬于NP類問題。