What are these contests??

Правка en1, от ista2000, 2017-03-04 13:36:07

I have recently subscribed to a telegram bot that sends me messages for the future contests on codeforces, codechef and topcoder.

I found some contests which don't appear on the "Contest" tab but showing that they will start in a day or an hour. And also I cant register for those. What are they? The links to the contests are below:
http://codeforces.com/contests/769
http://codeforces.com/contests/780

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en1 Английский ista2000 2017-03-04 13:36:07 443 Initial revision (published)