[BZOJ4734] [清华集训2016] 如何优雅地求和

n+e posted @ 2017年1月05日 21:11 in 日常 with tags 数学 , 3142 阅读

题目是我乱打的

题解在这里:https://trinkle23897.github.io/pdf/THUtraining2016-sum.pdf

---By n+e
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2021年9月04日 15:50

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