32 users have solved this problem:

testcoder, sidpark1, evanl, TheEpicCowOfLife, henryho2, user, trangim, horiseun, lion, jiefu_lu, ch13, Gomango999, dumpy, WenDidIAsk, programmer123, ndosh, dorian, numb3r5, Philip_cpp, Double_Slash, Uasoni2, RonXueAlt, Ghetto, awu, justin_g_20, Matthewwww, Lithanium, dusky, ProperDiamond, Chez, davinformatics, OoogaDooga,