60 users have solved this problem:

he, dumpy, evanl, munux, BM5, ngrace, numb3r5, pmoore, ryno, brchen, ja_kingy, Gomango999, mike4235, khuepr123, Normie28, rxw, TheEpicCowOfLife, testcoder, horiseun, user, henryho2, trangim, lion, Technocoder, WenDidIAsk, davinformatics, justin_g_20, programmer123, SirLemonMeringue, Magikarp4000, Ghetto, phoebe, derek303, grossly_overconfident, ndosh, yixiu, dorian, loctildore, Double_Slash, Philip_cpp, Matthewwww, ImMcHe, pony_joe1, ad_red, Uasoni2, ralismark, Lithanium, caterpillow, anson, PeaceOfCake, BigD, aerobull42, dusky, Vedang, OneT_Chen, blx330, jenny, Supermarine_Spitfire, HappyCapybara, chchn2507