`int n[5*10^5],sum=0;`
`^` 表示的是异或。
by sync_with_stdio @ 2022-02-06 11:34:22
改成 `500005`
@[Amano_Hina](/user/631713)
by sync_with_stdio @ 2022-02-06 11:36:06
还是有四个TLE
by Amano_Hina @ 2022-02-06 11:41:32
@[Amano_Hina](/user/631713) O(n²)过不去的
by 违规用户名gAGt8$%z @ 2022-02-06 12:04:09