我看一下官网的说明是这样
https://osu.ppy.sh/wiki/FAQ#Grades
osu! Standard
Normal grades
SS = 100% Accuracy
S = Over 90% 300s, less than 1% 50s and no misses.
A = Over 80% 300s and no misses OR over 90% 300s.
B = Over 70% 300s and no misses OR over 80% 300s.
C = Over 60% 300s.
D = Anything else.
但我刚刚打了一个 90% 的却只有 B
如图：https://i.imgur.com/Db5MSkP.png
甚至之前也有达到 "Over 80% 300s and no misses"
想请问为什么都拿不到 A 呢？！还少了什么条件吗？
（仔细看一下好像我拿到的分数都少了一点呢）
谢谢！