27 users have solved this problem:

testcoder, sidpark1, evanl, horiseun, lion, henryho2, ch13, Gomango999, dumpy, user, WenDidIAsk, ndosh, dorian, numb3r5, Double_Slash, Philip_cpp, Matthewwww, davinformatics, Uasoni2, PeaceOfCake, Ghetto, justin_g_20, awu, Lithanium, OoogaDooga, TheEpicCowOfLife, ifndef_INDEED_TIS_TRUE_HPP_,