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QOJ 常见问题(Q&A) by Qingyu 2023-03-23 22:14:28
QOJ 更新日志(2023 Aug) by Qingyu 2023-01-06 20:27:29
 
 
 
 
 
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7xiaowuc1you're a half a world away, but in my mind I whisper every single word you say527
8hos_lyric$$\left[\frac{x^n}{n!} q^{K-1}\right] \frac{(\mathrm{e}^{rx} - 1) (q + r + \mathrm{e}^{rx} + q \mathrm{e}^{rx} - r \mathrm{e}^{rx} + 1)}{(q + 1) (r - \mathrm{e}^{2rx} + r \mathrm{e}^{2rx} + 1)}$$458
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17sdoi$$P_{a_i}(x) = [t^{a_i}]\frac{1}{1-xF(t)}$$233
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