@[liyixi_i](/user/636142) 别，你是神仙，我想了1个小时呢（bushi
by Judgelight @ 2023-03-28 20:31:57
+1，思维难度不够，前缀异或和一下就是板子了
by chlchl @ 2023-03-28 22:40:47
@[Alex_Wei](/user/123294) @[小粉兔](/user/10703) qwq
by chlchl @ 2023-03-28 22:42:49
@[chlchl](/user/363036) 改了
by Alex_Wei @ 2023-03-30 06:15:41
蓝就行呀
by OldDriverTree @ 2023-04-11 22:56:50