How to solve this combinatorics problem?

Revision en1, by chai_peelo, 2019-03-31 17:46:43

How to solve the following problem using combinatorics

https://www.codechef.com/ICL2019/problems/ICL1904/

Tags #combinatorics, #codechef

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en1 English chai_peelo 2019-03-31 17:46:43 148 Initial revision (published)