65 users have solved this problem:

he, eddieee, hmm789, iamnumber4, sidpark1, Lvl9001Wizard, Gomango999, testcoder, dumpy, quanlin, WC6479, horiseun, user, evanl, lion, henryho2, hoangxuanbach, minhnhatnoe, dat123, harrysun2006, Virushaan, jamesjobrien, vvzz, davinformatics, clairesyd, Ghetto, hhyfirst, WenDidIAsk, Yichen, inj, xiaoxiong, programmer123, BigD, ndosh, SirLemonMeringue, dorian, Philip_cpp, loctildore, warren_huang, Sirhc_47, Qilewang, flyswatter, Double_Slash, kidneythedolphin, jmuzhen, Matthewwww, aerobull42, pony_joe1, Lucas4732, PeaceOfCake, yashb_9a3b, dusky, Lithanium, OoogaDooga, anson, jtia8705, blx330, Supermarine_Spitfire, doantronganh2008, sssss, BuMiTa, PhanAnh628, wap, jenny, Uasoni2