BTW, after browsing the problem list, I find this problem

Question

BTW, after browsing the problem list, I find this problem

especially interesting.

https://www.codechef.com/ISCC2017/problems/SEQUA

I consider using group theory, and in this way the complexity is around 1e6 (max{M^2, N/M}). Are there any simpler solutions?

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22.07.2017

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SR · Accepted Answer

SR

what's the group theory ??

0

22.07.2017

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