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摘要： 题目链接 题目描述： Given an integer $n$. Consider all pairs of integer arrays $a$ and $p$ of the same length such that $n=∏a^{pi}_i$$($i.e. $a^{p1}_1⋅a^{p2}_2 阅读全文

摘要： 题目链接 题目描述： Vlad found two positive numbers $a$ and $b(a,b>0)$. He discovered that $a⊕b=\frac{a+b}{2}$, where $⊕$ means the bitwise exclusive OR , and 阅读全文