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宠辱不惊，看庭前花开花落；去留无意，望天上云卷云舒
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Kiedy ty zmondrzejesz Jan Myszka?
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$$\oint_{w=0}\frac{dw}{2\pi i}\frac{1}{f(w)-z}=\sum_{n=0}^\infty\frac{z^n}{n!}\left.\frac{d^n}{dw^n}\left(\frac{w}{f(w)}\right)^{n+1}\right|_{w=0}$$