Well, as you see, I got a lot of rating and become blue after Codeforces Round 938.\(^_^)/ But... Is this really reasonable?
I got rank 1500+ and a lot of coders near or below my rating at basically the same rankings gained much less than me. How did it happen? It seems like my problem B was never hacked for my qsort(I finally solved ACDEF, B was hacked). Or are there any "Newbie protection" or that sort of things for me?:)
You are a new user, and the Codeforces algorithm works where new users have a better rating curve in the first few rounds.
Thanks! That makes sense :D
No problem! Congrats on reaching expert! :)
If I recall correctly — your initial rating is actually 1400, but is shown as 0. Codeforces releases this rating for you over your first 6 rated rounds. Your deltas thus become:
- $$$del_1$$$ + 500 for the first round
- $$$del_2$$$ + 350 for the second
- $$$del_3$$$ + 250 for the third
- $$$del_4$$$ + 150 for the fourth
- $$$del_5$$$ + 100 for the fifth
- $$$del_6$$$ + 50 for the sixth
So, if I were to apply that to your ratings graph, your hidden ratings and deltas would be:
$$$rating_1=1576$$$, $$$del_1=176$$$
$$$rating_2=1669$$$, $$$del_2=93$$$
$$$rating_3=1806$$$, $$$del_3=137$$$
$$$rating_4=1758$$$, $$$del_4=-48$$$
Edit:
Note — Whether or not a round is rated for you depends on your actual/shown rating and not the hidden rating. So, while your hidden rating was in the expert range, Round 938(Div.3) was rated for you, and similarly Round 937(Div.4) as well, although the default rating itself is 1400.
Amazing! I know there was a time when new users have 1500 or 1400 rating initially. So now our initial rating is actually hidden rather than disappear?
Indeed. This announcement explains it alongside the rationale.