結果
問題 | No.1320 Two Type Min Cost Cycle |
ユーザー | Slephy |
提出日時 | 2023-07-02 03:39:46 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 858 ms / 2,000 ms |
コード長 | 4,868 bytes |
コンパイル時間 | 2,489 ms |
コンパイル使用メモリ | 217,884 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-08 14:09:20 |
合計ジャッジ時間 | 10,040 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 3 ms
5,376 KB |
testcase_07 | AC | 18 ms
5,376 KB |
testcase_08 | AC | 32 ms
5,376 KB |
testcase_09 | AC | 858 ms
5,376 KB |
testcase_10 | AC | 28 ms
5,376 KB |
testcase_11 | AC | 417 ms
5,376 KB |
testcase_12 | AC | 76 ms
5,376 KB |
testcase_13 | AC | 199 ms
5,376 KB |
testcase_14 | AC | 17 ms
5,376 KB |
testcase_15 | AC | 30 ms
5,376 KB |
testcase_16 | AC | 15 ms
5,376 KB |
testcase_17 | AC | 11 ms
5,376 KB |
testcase_18 | AC | 10 ms
5,376 KB |
testcase_19 | AC | 85 ms
5,376 KB |
testcase_20 | AC | 7 ms
5,376 KB |
testcase_21 | AC | 429 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 16 ms
5,376 KB |
testcase_29 | AC | 114 ms
5,376 KB |
testcase_30 | AC | 2 ms
5,376 KB |
testcase_31 | AC | 20 ms
5,376 KB |
testcase_32 | AC | 2 ms
5,376 KB |
testcase_33 | AC | 235 ms
5,376 KB |
testcase_34 | AC | 148 ms
5,376 KB |
testcase_35 | AC | 5 ms
5,376 KB |
testcase_36 | AC | 23 ms
5,376 KB |
testcase_37 | AC | 3 ms
5,376 KB |
testcase_38 | AC | 9 ms
5,376 KB |
testcase_39 | AC | 4 ms
5,376 KB |
testcase_40 | AC | 2 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 38 ms
5,376 KB |
testcase_44 | AC | 17 ms
5,376 KB |
testcase_45 | AC | 755 ms
5,376 KB |
testcase_46 | AC | 17 ms
5,376 KB |
testcase_47 | AC | 212 ms
5,376 KB |
testcase_48 | AC | 96 ms
5,376 KB |
testcase_49 | AC | 13 ms
5,376 KB |
testcase_50 | AC | 2 ms
5,376 KB |
testcase_51 | AC | 2 ms
5,376 KB |
testcase_52 | AC | 45 ms
5,376 KB |
testcase_53 | AC | 20 ms
5,376 KB |
testcase_54 | AC | 127 ms
5,376 KB |
testcase_55 | AC | 128 ms
5,376 KB |
testcase_56 | AC | 127 ms
5,376 KB |
testcase_57 | AC | 568 ms
5,376 KB |
testcase_58 | AC | 569 ms
5,376 KB |
testcase_59 | AC | 568 ms
5,376 KB |
ソースコード
// https://yukicoder.me/problems/no/1320 #include <bits/stdc++.h> using namespace std; using ll = long long; constexpr int INF = (int)1e9 + 1001010; constexpr ll llINF = (ll)4e18 + 22000020; const string endn = "\n"; template <class T> inline vector<vector<T>> vector2(size_t i, size_t j, const T &init = T()) {return vector<vector<T>>(i, vector<T>(j, init));} const string ELEM_SEPARATION = " ", VEC_SEPARATION = endn; template<class T> istream& operator >>(istream &i, vector<T> &A) {for(auto &I : A) {i >> I;} return i;} template<class T> ostream& operator <<(ostream &o, const vector<vector<T>> &A) {int i=A.size(); for(auto &I : A){o << I << (--i ? VEC_SEPARATION : "");} return o;} template<class T> ostream& operator <<(ostream &o, const vector<T> &A) {int i=A.size(); for(auto &I : A){o << I << (--i ? ELEM_SEPARATION : "");} return o;} template<class T> vector<T>& operator ++(vector<T> &A, int n) {for(auto &I : A) {I++;} return A;} template<class T> vector<T>& operator --(vector<T> &A, int n) {for(auto &I : A) {I--;} return A;} template<class T, class U> bool chmax(T &a, const U &b) {return ((a < b) ? (a = b, true) : false);} template<class T, class U> bool chmin(T &a, const U &b) {return ((a > b) ? (a = b, true) : false);} ll floor(ll a, ll b) {assert(b != 0); return((a%b != 0 && ((a>0) != (b>0))) ? a/b-1 : a/b);} ll ceil (ll a, ll b) {assert(b != 0); return((a%b != 0 && ((a>0) == (b>0))) ? a/b+1 : a/b);} // ================================== ここまでテンプレ ================================== template<class T> using priority_queue_greater = priority_queue<T, vector<T>, greater<T>>; template<class T> class CostEdge{ public: int to; T cost; CostEdge(int to, T cost) : to(to), cost(cost){}; bool operator <(const CostEdge &other) const { if(cost != other.cost) return (cost < other.cost); else return (to < other.to); } }; template<class CostType> class WeightedGraph{ public: const int size; const CostType INF = numeric_limits<CostType>::max(); vector<vector<CostEdge<CostType>>> edges; WeightedGraph(int size) : size(size), edges(size){} vector<CostEdge<CostType>>& operator [](size_t index){ return edges.at(index); } const vector<CostEdge<CostType>>& operator [](size_t index)const{ return edges.at(index); } void add_edge(size_t from, size_t to, CostType cost){ edges[from].emplace_back(to, cost); } }; enum class graph_direction{ directed, undirected, }; template<class T> T shortest_cycle(const WeightedGraph<T> &wg, graph_direction graph_dirc){ auto solve = [&](int root) -> ll { // rootを根とする最短路木を作る vector<ll> distance(wg.size, llINF); vector<int> label(wg.size); // label[root] := root, label[i] := (最短路木でiの祖先である頂点(iを含む)のうち、根に最も近いもの) { priority_queue_greater<tuple<ll, int, int>> pq; // {dist, vIndex} pq.emplace(0, root, root); while(!pq.empty()){ auto [d, now, pre] = pq.top(); pq.pop(); if(distance[now] < d) continue; distance[now] = d; if(pre == root) label[now] = now; else label[now] = label[pre]; for(auto [nxt, cost] : wg[now]){ pq.emplace(d+cost, nxt, now); } } } // 最短閉路を見つける ll ret = llINF; for(int from = 0; from < wg.size; from++){ if(from == root) continue; for(auto [to, cost] : wg[from]){ if(graph_dirc == graph_direction::undirected){ if(label[from] == label[to]) continue; if(to == root && label[from] == from) continue; else chmin(ret, distance[from] + distance[to] + cost); } if(graph_dirc == graph_direction::directed){ if(to != root) continue; else chmin(ret, distance[from] + cost); } } } return ret; }; ll ans = wg.INF; for(int i = 0; i < wg.size; i++){ chmin(ans, solve(i)); } return ans; } int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); int t; cin >> t; int n, m; cin >> n >> m; // auto edges = vector2<pair<int, ll>>(n, 0); auto edges = WeightedGraph<ll>(n); for(int i = 0; i < m; i++){ int u, v, w; cin >> u >> v >> w; u--; v--; edges[u].emplace_back(v, w); if(t == 0) edges[v].emplace_back(u, w); } auto ans = shortest_cycle(edges, (t==0) ? graph_direction::undirected : graph_direction::directed); if(ans == llINF) cout << -1 << endl; else cout << ans << endl; return 0; }