Struct cp_library_rs::graph::hld::HLD

source ·
pub struct HLD {
    pub N: usize,
    pub root: usize,
    pub G: Vec<Vec<usize>>,
    pub parent: Vec<usize>,
    pub subtree_size: Vec<usize>,
    pub in_: Vec<usize>,
    pub out: Vec<usize>,
    pub head: Vec<usize>,
}
Expand description

HL分解

Fields§

§N: usize

頂点数

§root: usize

§G: Vec<Vec<usize>>

グラフ

§parent: Vec<usize>

親頂点

§subtree_size: Vec<usize>

subtree_size[i] := iを根とする部分木のサイズ

§in_: Vec<usize>

行きがけ順での番号

§out: Vec<usize>

帰りがけ順での番号

§head: Vec<usize>

heavy pathの端点

Implementations§

source§

impl HLD

source

pub fn new(N: usize) -> Self

N頂点の木を初期化する

source

pub fn add_edge(&mut self, u: usize, v: usize)

(u,v)を追加する

source

pub fn decompose(&mut self, root: usize)

頂点rootを根としてHL分解をする

source

pub fn get_id(&self, v: usize) -> usize

頂点vの配列上でのインデックス

source

pub fn get_lca(&self, u: usize, v: usize) -> usize

2頂点u,vの最小共通祖先 (LCA) を求める

source

pub fn get_subtree<T, F>(&self, u: usize) -> (usize, usize)

uを根とする部分木の値を集約する

(モノイドMが可環であるときに定義される)

戻り値

  • (usize, usize) : (左, 右)
source

pub fn get_path(&self, u: usize, v: usize) -> PathSegment<'_>

頂点u,v間のパス上のパス断片を順に返すイテレータを返す.

戻り値 (Item)

  • i (usize) : 最も根側の頂点
  • j (usize) : 最も葉側の頂点
  • last (bool) : 最後のpath segmentであるか
  • rev (bool) : 取得するpathの向きに対してpath segmentが逆方向かどうか

Auto Trait Implementations§

§

impl RefUnwindSafe for HLD

§

impl Send for HLD

§

impl Sync for HLD

§

impl Unpin for HLD

§

impl UnwindSafe for HLD

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
§

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

§

fn vzip(self) -> V