About a month ago in Augest-Long-Challenge[2016] a question — "Funny — Genome" was asked in CodeChef. Although no Official Editorial was released for it , "wodahs_cc" suggested that we need to use "Four Russian Method" to solve for the problem in the forum. I've searched the Internet and also gone through the Video for it, but I could not find a proper implementation to it, So I've Implemented it with my own understanding of the algorithm but still got "Time-Limit-Exceeded" error for some test cases. I don't know what I did wrong. I request you people of Code-Forces community to kindly provide an Implementation for the Four-Russian-Method. I thank you all in advance.

P.S : A Link to my Implementation.