Have you ever been curious about what your rating change would have been if you had participated in a contest live instead of virtually? Or wondered what difference it would make if you solved one more problem in the last contest?

Now, you can find out. Simply enter the contest ID, the points you earned in the contest, and your rating.

Note: The contest ID is not the round number. It is the ID that appears in the contest URL, such as codeforces.com/contest/577/