Why does codeforces have registration for contests?

Правка en1, от rahulkhairwar, 2015-11-27 19:33:27

I was wondering why does codeforces have registration for contests, unlike some other sites like codechef, hackerearth allowing participants to participate even in ongoing competitions.

Теги codeforces, registration

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en1 Английский rahulkhairwar 2015-11-27 19:33:27 240 Initial revision (published)