Site: CodeChef Contest: April Long Challenge Problem Name: Friend or Girlfriend Problem Link: https://www.codechef.com/APRIL19B/problems/STRCH/ Problem Type: Math, Combinatorics Github Links: Python: https://github.com/codereport/CodeChef/blob/master/LongChallenge_2019_04_STRCH.py C++: https://github.com/codereport/CodeChef/blob/master/LongChallenge_2019_04_STRCH.cpp Haskell: https://github.com/codereport/CodeChef/blob/master/LongChallenge_2019_04_STRCH.hs Follow me on Github: https://github.com/codereport Follow me on Twitter: https://twitter.com/code_report Follow me on HackerRank: https://www.hackerrank.com/code_report Follow me on Codeforces: http://codeforces.com/profile/code_report Follow me on HackerEarth: https://www.hackerearth.com/@code_report Follow me on Quora: https://www.quora.com/profile/Conor-Hoekstra Follow me on LinkedIn: https://www.linkedin.com/company/codereport/ Follow me on Instagram: https://www.instagram.com/code_report/