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IMHO, the main thing is to complete it in the same number of days as the leader (or faster). In the case of an equal number of days with the leader, but with lower scores in other parameters, the difference in the rating will be negligible. But if you fall behind the leader by even one day, the difference in the rating will be very large (even if other parameters are much higher). So, the main thing is the number of days, and everything else is just minor details!