2016 Google Code Jam Round 1A (A. The Last Word,B. Rank and File,C. BFFs(二元环))
TheLastWordProblemOnthegameshowTheLastWord,thehostbeginsaroundbyshowingthecontestantastringSofuppercaseEnglishletters.Thecontestanthasawhiteboardwhichisinitiallyblank.Thehostwillthenpresentthecontesta