我试过了，不这样就 WA 了
by ducati @ 2021-03-20 14:55:51
为了要pushup吧
by UltiMadow @ 2021-03-20 14:58:43
splay到根一方面要保证树随机还有就是保证insert之后该点到根都pushup吧
by UltiMadow @ 2021-03-20 14:59:47
@[UltiMadow](/user/65681) 啊这，懂了/kel
sto $\color {black} \text {U} \color {red} \text {ltiMadow}$ orz，$\text{dp}$ 带师 & $\text{Splay}$ 带师！
by ducati @ 2021-03-20 15:04:23