37 users have solved this problem:

emilyz, he, Bean, lion, study, brchen, dylanp, testcoder, henryho2, user, dumpy, dubm, Gomango999, evanl, WenDidIAsk, horiseun, programmer123, ndosh, dorian, SirLemonMeringue, loctildore, Double_Slash, WC6479, pony_joe1, awu, Lithanium, PeaceOfCake, dusky, Uasoni2, Ghetto, davinformatics, Matthewwww, blx330, jenny, Supermarine_Spitfire, OoogaDooga, Philip_cpp