@[luogeJing](/user/303782)
by __gcd @ 2020-03-31 11:25:39
@[luogeJing](/user/303782) 不要信那个只要背模板的,以后 Splay 什么的还能背模板?
by __gcd @ 2020-03-31 11:26:13
@[一只大头](/user/149192) 谢谢大佬,好像有点明白
by Thir @ 2020-03-31 14:42:04