Src/Graph/ShortestPath/Edge.hpp

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• Last update: 2023-12-14 22:32:29+09:00
• Include: #include "Src/Graph/ShortestPath/Edge.hpp"

Depends on

• 標準データ型のエイリアス (Src/Template/TypeAlias.hpp)

Required by

• Src/Graph/ShortestPath/BFS.hpp
• Src/Graph/ShortestPath/Dijkstra.hpp
• Src/Graph/ShortestPath/ShortestPathTree.hpp
• Src/Graph/ShortestPath/WeightedShortestPathTree.hpp

Verified with

• AOJ2872 最短距離を伸ばすえびちゃん (Test/AOJ/2872.test.cpp)
• Test/LC/shortest_path.test.cpp
• Test/Manual/abc168_d.test.cpp
• Test/Manual/abc252_e.test.cpp
• Test/Manual/abc271_d.test.cpp

Code

#pragma once

#include "../../Template/TypeAlias.hpp"

namespace zawa {

namespace internal {

class Edge {
protected:
    static constexpr u32 INVALID{static_cast<u32>(-1)};
public:
    u32 parent{INVALID}; 
    u32 id{INVALID};
    Edge() = default;
    Edge(u32 parent, u32 id) : parent{parent}, id{id} {}
    Edge& operator=(const Edge& edge) {
        parent = edge.parent;
        id = edge.id;
        return *this;
    }
    inline bool exist() const noexcept {
        return parent != INVALID;
    }
    static constexpr u32 invalid() noexcept {
        return INVALID; 
    }
};

template <class Weight>
class WeightedEdge : public Edge {
public:
    Weight weight{INVALID};
    WeightedEdge() = default;
    WeightedEdge(u32 parent, const Weight& weight, u32 id)
        : Edge{parent, id}, weight{weight} {}

    WeightedEdge& operator=(const WeightedEdge& edge) {
        parent = edge.parent;
        id = edge.id;
        weight = edge.weight;
        return *this;
    }

};

} // namespace internal

} // namespace zawa

#line 2 "Src/Graph/ShortestPath/Edge.hpp"

#line 2 "Src/Template/TypeAlias.hpp"

#include <cstdint>
#include <cstddef>

namespace zawa {

using i16 = std::int16_t;
using i32 = std::int32_t;
using i64 = std::int64_t;
using i128 = __int128_t;

using u8 = std::uint8_t;
using u16 = std::uint16_t;
using u32 = std::uint32_t;
using u64 = std::uint64_t;

using usize = std::size_t;

} // namespace zawa
#line 4 "Src/Graph/ShortestPath/Edge.hpp"

namespace zawa {

namespace internal {

class Edge {
protected:
    static constexpr u32 INVALID{static_cast<u32>(-1)};
public:
    u32 parent{INVALID}; 
    u32 id{INVALID};
    Edge() = default;
    Edge(u32 parent, u32 id) : parent{parent}, id{id} {}
    Edge& operator=(const Edge& edge) {
        parent = edge.parent;
        id = edge.id;
        return *this;
    }
    inline bool exist() const noexcept {
        return parent != INVALID;
    }
    static constexpr u32 invalid() noexcept {
        return INVALID; 
    }
};

template <class Weight>
class WeightedEdge : public Edge {
public:
    Weight weight{INVALID};
    WeightedEdge() = default;
    WeightedEdge(u32 parent, const Weight& weight, u32 id)
        : Edge{parent, id}, weight{weight} {}

    WeightedEdge& operator=(const WeightedEdge& edge) {
        parent = edge.parent;
        id = edge.id;
        weight = edge.weight;
        return *this;
    }

};

} // namespace internal

} // namespace zawa

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