Hello.My question is : why some people have several Handles in Codeforces ? LIKE: Amir mohammad Dehghan => amirmd76 = fuckfuckfucknowsuck = cmonsuckitbitch = 217936128632483 = ACMICPCICPCICPCICPCIPSC = ... Hossein Yousefi => HosseinYousefi = UseFi = useit = mia = ... Amir Pojhan => kerevat = amirp Arman Qaffari => ESOI = arman77 Why? Don't forget to leave comment :D