`p` 和 `a` 都开了 `long double`
by Tibrella @ 2023-07-14 22:14:14
@[Tibrella](/user/655192) 不建议使用longdouble，容易精度丢失。
by gk4000plus @ 2023-07-15 07:54:49
@[gk4000plus](/user/803959) double 也试过了
by Tibrella @ 2023-07-15 08:00:10
`calc(q.back().p, q.front().l)` 应当是 `calc(q.back().p, q.back().l)`
妈的我退役吧
@[gk4000plus](/user/803959)
by Tibrella @ 2023-07-15 21:32:47