0 votes 0 votes Is there is any good method or procedure to solve this question? or else I have to try by brute force... Daniyal89 asked Sep 18, 2018 Daniyal89 129 views answer comment Share Follow See 1 comment See all 1 1 comment reply Anurag Parothia 1 commented Sep 18, 2018 reply Follow Share I think you have to try brute force 0 votes 0 votes Please log in or register to add a comment.