Поделитесь своими знаниями, ответьте на вопрос:
Create a program “The registration system”. You will input n users. Each time you have inputed user “OK” message will appear. If there is an user that already exist “username1” message will appear. Everytime number should increment. Input: Output: 5 abs OK bcd OK abs abs1 bcd bcd1 abs abs2
textual
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Объяснение:
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