2018 CCPC Girl Contest

Time:2018.6.3

Link



A

题意

给一个长度为n的序列,有m个询问,每个询问三个数 l,r,d,问a[l] ×a[l+1]×.....×a[r],是否为d的倍数  (n<=1e5,1<=l<=r<=n,a[i]<=1e5 ,d<=1e5 )

分析

对每个数分解质因数,维护一个前缀质因数和,对于每次询问,查询区间[l,r]的质因数是否全部含有d的质因数即可

时间复杂度O(T*nlogn)



2018 CCPC Girl Contest

原文地址:https://www.cnblogs.com/Deadline/p/9131001.html

时间: 2024-11-02 23:14:46

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