結果
問題 | No.17 2つの地点に泊まりたい |
ユーザー | not_522 |
提出日時 | 2015-07-16 21:09:48 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 4,145 bytes |
コンパイル時間 | 1,610 ms |
コンパイル使用メモリ | 171,724 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-15 01:24:41 |
合計ジャッジ時間 | 2,313 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 1 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 2 ms
5,248 KB |
testcase_14 | AC | 1 ms
5,248 KB |
testcase_15 | AC | 1 ms
5,248 KB |
testcase_16 | AC | 1 ms
5,248 KB |
testcase_17 | AC | 2 ms
5,248 KB |
testcase_18 | AC | 2 ms
5,248 KB |
testcase_19 | AC | 2 ms
5,248 KB |
testcase_20 | AC | 2 ms
5,248 KB |
testcase_21 | AC | 1 ms
5,248 KB |
testcase_22 | AC | 2 ms
5,248 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 2 ms
5,248 KB |
testcase_25 | AC | 1 ms
5,248 KB |
testcase_26 | AC | 2 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; struct Edge { typedef int CostType; const static int cost = 1; int from, to; Edge(int from, int to) : from(from), to(to) {}; }; template<typename Cost> struct WeightedEdge : public Edge { typedef Cost CostType; Cost cost; WeightedEdge(int from, int to, Cost cost = 0) : Edge(from, to), cost(cost) {} }; template<typename Capacity> struct ResidualEdge : public Edge { typedef Capacity CapacityType; Capacity cap; int rev; ResidualEdge(int from, int to, Capacity cap) : Edge(from, to), cap(cap) {} ResidualEdge reverse() const {return ResidualEdge(to, from, 0);} }; template<typename Capacity, typename Cost> struct WeightedResidualEdge : public ResidualEdge<Capacity> { Cost cost; WeightedResidualEdge(int from, int to, Capacity cap, Cost cost) : ResidualEdge<Capacity>(from, to, cap), cost(cost) {} WeightedResidualEdge reverse() const {return WeightedResidualEdge(this->to, this->from, 0, -cost);} }; template<typename Edge> class Graph { public: typedef Edge EdgeType; virtual int size() const = 0; template<typename... Args> void addEdge(Args...) {} template<typename... Args> void addUndirectedEdge(Args...) {} virtual vector<Edge> getEdges() const = 0; virtual vector<Edge> getEdges(int from) const = 0; virtual vector<Edge> getEdges(int from, int to) const = 0; virtual int getDegree(int v) const = 0; }; template<typename Edge> class AdjacencyList : public Graph<Edge> { protected: vector<vector<Edge>> graph; public: AdjacencyList(int n) : graph(n) {} int size() const { return graph.size(); } template<typename... Args> void addEdge(Args... args) { Edge edge(args...); graph[edge.from].emplace_back(edge); } template<typename... Args> void addUndirectedEdge(Args... args) { Edge edge(args...); addEdge(edge); swap(edge.from, edge.to); addEdge(edge); } vector<Edge> getEdges() const { vector<Edge> res; for (const auto& edges : graph) { res.insert(res.end(), edges.begin(), edges.end()); } return res; } vector<Edge> getEdges(int from) const { return graph[from]; } vector<Edge> getEdges(int from, int to) const { vector<Edge> res; for (const auto& edge : graph[from]) { if (edge.to == to) res.emplace_back(edge); } return res; } int getDegree(int v) const { return graph[v].size(); } vector<Edge>& operator[](int v) { return graph[v]; } }; template<typename Graph> class WarshallFloyd { private: typedef typename Graph::EdgeType::CostType Cost; const Graph& graph; public: const static Cost INF = numeric_limits<Cost>::max() / 2 - 1; vector<vector<Cost>> dis; WarshallFloyd(const Graph& graph) : graph(graph), dis(graph.size(), vector<Cost>(graph.size(), INF)) { for (int i = 0; i < graph.size(); ++i) dis[i][i] = 0; } void solve() { for (const auto& edge : graph.getEdges()) { dis[edge.from][edge.to] = min(dis[edge.from][edge.to], edge.cost); } for (int k = 0; k < graph.size(); ++k) { for (int i = 0; i < graph.size(); ++i) { for (int j = 0; j < graph.size(); ++j) { dis[i][j] = min(dis[i][j], dis[i][k] + dis[k][j]); } } } } }; template<typename Graph> inline WarshallFloyd<Graph> shortestPath(Graph& graph) { WarshallFloyd<Graph> warshallFloyd(graph); warshallFloyd.solve(); return warshallFloyd; } int main() { typedef AdjacencyList<WeightedEdge<int>> Graph; int n; cin >> n; vector<int> s(n); for (int& i : s) cin >> i; Graph graph(n); int m; cin >> m; for (int i = 0; i < m; ++i) { int a, b, c; cin >> a >> b >> c; graph.addUndirectedEdge(a, b, c); } auto dis = shortestPath(graph).dis; int res = numeric_limits<int>::max(); const int INF = WarshallFloyd<Graph>::INF; for (int i = 1; i < n - 1; ++i) { for (int j = 1; j < n - 1; ++j) { if (i == j) continue; if (dis[0][i] == INF || dis[i][j] == INF || dis[j][n - 1] == INF) continue; res = min(res, dis[0][i] + dis[i][j] + dis[j][n - 1] + s[i] + s[j]); } } cout << res << endl; }