43 users have solved this problem:

Gomango999, m012444m213, hollwo_pelw, evanl, he, justin_g_20, dumpy, KarL06, henryho2, lion, user, testcoder, loctildore, WenDidIAsk, horiseun, alexdaguy, phoebe, Magikarp4000, Ghetto, ar88lo, gaulle, Salamander, ndosh, awu, dorian, daoquanglinh2k7, yixiu, numb3r5, programmer123, Matthewwww, Lithanium, caterpillow, Uasoni2, Double_Slash, SirLemonMeringue, Vedang, davinformatics, blx330, HappyCapybara, pony_joe1, finehaveanormalusername, Supermarine_Spitfire, jtia8705