Codeforces Global Round 8 , Problem B. Codeforces Subsequences

Codeforces Global Round 8 , Problem B. Codeforces Subsequences Problem Statement : https://codeforces.com/contest/1368/problem/B CODE : https://ideone.com/HaCQtD ************************************************************ Codeforces Question Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmDaWkjw7M2x9qFstCHoC6jC Graph Theory Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmDHmdh9G2pYoEEMSfK_Sjir Codechef Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmBb7WarQYbzrIHzYXcI3Lfr&pbjreload=10 AtCoder Playlist : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmCDy9GPzZXHR6-FabjuIyjc Problem A Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmArl_hzDzQ7zHZRaiPLYTU0 Problem B Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmDIdbLwmv0WGufLtNd58GOS Problem C Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmC88miJ7pIKdlDgDzEkwwTT Problem D Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmAi60fJaQ7eCdXfpaOQz5oG Problem E Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmAsS33PMHf9E3IMKIrk2ArB Problem F Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmCm_bF978MRgslGvoPYZ-WP Problem G Ladder : https://www.youtube.com/playlist?list=PLEL7R4Pm6EmCv7UTzKWmCgwU436sBacpY