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Petrozavodsk Summer-2015. Ivan Smirnov Contest 1 B Bloom
时间 2021-01-06
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http://opentrains.snarknews.info/~ejudge/team.cgi?contest_id=001463 题目大意: 给出$n$个$x$,$m$个$y$,问有多少个hash函数 $y \equiv Ax + B (mod \ p)$, $p$是质数使得对$x$的集合加密后得到$y$的集合。 题解: 首先将所有$x$ mod $p$后去重。 剩下$n$个不同的$x$
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