2828\begin{aligned}
2929\left(\text{AC Rating}\right) &= \left(\text{Sum of the difficulty values of the top 100 solved problems}\right) \\
3030&+ \left(\text{Bonus rating based on CLASS}\right) \\
31- &+ \left\lfloor 175 \times \left(1-0.995 ^{\left(\text{Number of solved problems}\right)}\right) \right\rceil \\
31+ &+ \left\lfloor 200 \times \left(1-0.997 ^{\left(\text{Number of solved problems}\right)}\right) \right\rceil \\
3232&+ \left\lfloor 25\times \left(1-0.9^{\left(\text{Contribution}\right)}\right) \right\rceil
3333\end{aligned}
3434$$
@@ -40,7 +40,7 @@ $\left\lfloor x \right\rceil$ means rounding $x$ to an integer.
4040 - Reference: Guide [ ** Problem Level** ] ( /en/problem/level )
4141- You can receive bonus ratings based on CLASS grades.
4242 - Reference: Guide [ ** CLASS** ] ( /en/stats/class )
43- - You can receive up to 175 bonus ratings based on the number of problems solved.
43+ - You can receive up to 200 bonus ratings based on the number of problems solved.
4444 - The number of problems solved excludes problems marked as 'Extra' and <Tier t = { 0 } locked /> problems on Baekjoon Online Judge.
4545- You can receive up to 25 bonus ratings based on the contribution.
4646 - Only contributions reflected in the difficulty calculation are applied to the contribution.
@@ -67,17 +67,19 @@ The most difficult 100 problems you have solved will be reflected in your rating
6767
6868Also, you can receive bonus ratings based on the number of problems solved.
6969
70- - The bonus rating is the sum of $\left\lfloor 175 \times \left(1-0.995 ^{ \left (\text {number of solved problems }\right )} \right) \right\rceil$.
71- - If you have solved 1,169 problems or more, the bonus rating will be the maximum.
70+ - The bonus rating is the sum of $\left\lfloor 200 \times \left(1-0.997 ^{ \left (\text {number of solved problems }\right )} \right) \right\rceil$.
71+ - If you have solved 1,995 problems or more, the bonus rating will be the maximum.
7272
7373| # of solved problems | Bonus rating |
7474| :---:| :---:|
75- | 10 | 9 |
76- | 50 | 39 |
77- | 100 | 69 |
78- | 250 | 125 |
79- | 500 | 161 |
80- | 1,169 | 175 |
75+ | 10 | 6 |
76+ | 50 | 28 |
77+ | 100 | 52 |
78+ | 250 | 106 |
79+ | 500 | 155 |
80+ | 1,000 | 190 |
81+ | 1,500 | 198 |
82+ | 1,995 | 200 |
8183
8284### 2. CLASS Acquisition
8385
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