The Codeforces rating system is introduced here and in the formula, there's nothing related to how many contests I've participated in (If there is any updated formula I'll appreciate to be noticed). I just wanna verify that my thesis is right and there's no relation between my rating change to contest except for the difficulty of the problems and ratings of participants. To put it another way, suppose my current rating is 1500 and if I end up in 100th position my rating will change for example by +50 points no matter if it's my 5th contest or 500th contest.