25 users have solved this problem:

Gomango999, evanl, hiennoob, minhnhatnoe, user, warren_huang, lion, henryho2, programmer123, dorian, loctildore, WenDidIAsk, Double_Slash, angus, Lucas4732, ralismark, Lithanium, OoogaDooga, junkbot, TheEpicCowOfLife, newai, Vincent, JustinWang, Muyao_Zhang, caterpillow,