結果
問題 | No.1320 Two Type Min Cost Cycle |
ユーザー | 👑 emthrm |
提出日時 | 2020-12-19 15:45:18 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 423 ms / 2,000 ms |
コード長 | 4,742 bytes |
コンパイル時間 | 3,008 ms |
コンパイル使用メモリ | 223,164 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-21 10:21:45 |
合計ジャッジ時間 | 6,724 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 4 ms
6,944 KB |
testcase_08 | AC | 8 ms
6,940 KB |
testcase_09 | AC | 307 ms
6,944 KB |
testcase_10 | AC | 4 ms
6,940 KB |
testcase_11 | AC | 208 ms
6,940 KB |
testcase_12 | AC | 31 ms
6,940 KB |
testcase_13 | AC | 100 ms
6,940 KB |
testcase_14 | AC | 6 ms
6,944 KB |
testcase_15 | AC | 4 ms
6,940 KB |
testcase_16 | AC | 4 ms
6,944 KB |
testcase_17 | AC | 3 ms
6,944 KB |
testcase_18 | AC | 3 ms
6,944 KB |
testcase_19 | AC | 46 ms
6,940 KB |
testcase_20 | AC | 3 ms
6,944 KB |
testcase_21 | AC | 189 ms
6,940 KB |
testcase_22 | AC | 2 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,940 KB |
testcase_24 | AC | 2 ms
6,944 KB |
testcase_25 | AC | 2 ms
6,944 KB |
testcase_26 | AC | 3 ms
6,944 KB |
testcase_27 | AC | 2 ms
6,944 KB |
testcase_28 | AC | 6 ms
6,944 KB |
testcase_29 | AC | 37 ms
6,944 KB |
testcase_30 | AC | 2 ms
6,940 KB |
testcase_31 | AC | 7 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,944 KB |
testcase_33 | AC | 95 ms
6,944 KB |
testcase_34 | AC | 53 ms
6,940 KB |
testcase_35 | AC | 2 ms
6,940 KB |
testcase_36 | AC | 3 ms
6,944 KB |
testcase_37 | AC | 2 ms
6,944 KB |
testcase_38 | AC | 3 ms
6,940 KB |
testcase_39 | AC | 2 ms
6,940 KB |
testcase_40 | AC | 2 ms
6,940 KB |
testcase_41 | AC | 2 ms
6,940 KB |
testcase_42 | AC | 2 ms
6,944 KB |
testcase_43 | AC | 4 ms
6,944 KB |
testcase_44 | AC | 3 ms
6,944 KB |
testcase_45 | AC | 423 ms
6,940 KB |
testcase_46 | AC | 6 ms
6,940 KB |
testcase_47 | AC | 69 ms
6,940 KB |
testcase_48 | AC | 57 ms
6,940 KB |
testcase_49 | AC | 6 ms
6,940 KB |
testcase_50 | AC | 2 ms
6,940 KB |
testcase_51 | AC | 2 ms
6,940 KB |
testcase_52 | AC | 17 ms
6,940 KB |
testcase_53 | AC | 8 ms
6,940 KB |
testcase_54 | AC | 93 ms
6,944 KB |
testcase_55 | AC | 94 ms
6,944 KB |
testcase_56 | AC | 92 ms
6,940 KB |
testcase_57 | AC | 207 ms
6,940 KB |
testcase_58 | AC | 208 ms
6,940 KB |
testcase_59 | AC | 207 ms
6,944 KB |
ソースコード
#define _USE_MATH_DEFINES #include <bits/stdc++.h> using namespace std; #define FOR(i,m,n) for(int i=(m);i<(n);++i) #define REP(i,n) FOR(i,0,n) #define ALL(v) (v).begin(),(v).end() using ll = long long; constexpr int INF = 0x3f3f3f3f; constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL; constexpr double EPS = 1e-8; constexpr int MOD = 1000000007; // constexpr int MOD = 998244353; constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1}; constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1}; template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; } template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; } struct IOSetup { IOSetup() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << fixed << setprecision(20); } } iosetup; template <typename CostType> struct Edge { int src, dst; CostType cost; Edge(int src, int dst, CostType cost = 0) : src(src), dst(dst), cost(cost) {} inline bool operator<(const Edge &x) const { return cost != x.cost ? cost < x.cost : dst != x.dst ? dst < x.dst : src < x.src; } inline bool operator<=(const Edge &x) const { return !(x < *this); } inline bool operator>(const Edge &x) const { return x < *this; } inline bool operator>=(const Edge &x) const { return !(*this < x); } }; template <typename CostType> CostType girth_in_directed_graph(const std::vector<std::vector<Edge<CostType>>> &graph, const CostType CINF) { int n = graph.size(); CostType res = CINF; std::vector<CostType> dist(n); using Pci = std::pair<CostType, int>; std::priority_queue<Pci, std::vector<Pci>, std::greater<Pci>> que; for (int root = 0; root < n; ++root) { std::fill(dist.begin(), dist.end(), CINF); dist[root] = 0; que.emplace(0, root); while (!que.empty()) { CostType cost; int ver; std::tie(cost, ver) = que.top(); que.pop(); if (dist[ver] < cost) continue; for (const Edge<CostType> &e : graph[ver]) { CostType cost = dist[ver] + e.cost; if (cost < dist[e.dst]) { dist[e.dst] = cost; que.emplace(cost, e.dst); } else if (e.dst == root) { if (cost < res) res = cost; } } } } return res; } template <typename CostType> CostType girth_in_undirected_graph(int n, const std::vector<Edge<CostType>> &edges, const CostType CINF) { int m = edges.size(); std::vector<std::vector<int>> graph(n); for (int i = 0; i < m; ++i) { graph[edges[i].src].emplace_back(i); graph[edges[i].dst].emplace_back(i); } std::vector<bool> used(m, false); std::vector<CostType> dist(n); std::vector<int> label(n), prev(n); using Pci = std::pair<CostType, int>; std::priority_queue<Pci, std::vector<Pci>, std::greater<Pci>> que; CostType res = CINF; for (int root = 0; root < n; ++root) { std::fill(used.begin(), used.end(), false); std::fill(dist.begin(), dist.end(), CINF); dist[root] = 0; std::fill(label.begin(), label.end(), -2); label[root] = -1; std::fill(prev.begin(), prev.end(), -1); que.emplace(0, root); while (!que.empty()) { CostType c; int ver; std::tie(c, ver) = que.top(); que.pop(); if (dist[ver] < c) continue; for (int id : graph[ver]) { int dst = edges[id].src == ver ? edges[id].dst : edges[id].src; CostType cost = dist[ver] + edges[id].cost; if (cost < dist[dst]) { dist[dst] = cost; label[dst] = label[ver] == -1 ? dst : label[ver]; if (prev[dst] != -1) used[dst] = true; used[id] = true; que.emplace(cost, dst); } } } for (int i = 0; i < m; ++i) { int src = edges[i].src, dst = edges[i].dst; CostType cost = edges[i].cost; if (!used[i] && label[src] != -2 && label[dst] != -2) { if (label[src] != label[dst]) { CostType loop = dist[src] + dist[dst] + cost; if (loop < res) res = loop; } else if (label[src] == -1) { if (cost < res) res = cost; } } } } return res; } int main() { int t, n, m; cin >> t >> n >> m; if (t == 0) { vector<Edge<ll>> edges; while (m--) { int u, v, w; cin >> u >> v >> w; --u; --v; edges.emplace_back(u, v, w); } ll ans = girth_in_undirected_graph(n, edges, LINF); cout << (ans == LINF ? -1 : ans) << '\n'; } else if (t == 1) { vector<vector<Edge<ll>>> graph(n); while (m--) { int u, v, w; cin >> u >> v >> w; --u; --v; graph[u].emplace_back(u, v, w); } ll ans = girth_in_directed_graph(graph, LINF); cout << (ans == LINF ? -1 : ans) << '\n'; } return 0; }