結果
問題 | No.1812 Uribo Road |
ユーザー | ei1333333 |
提出日時 | 2022-01-14 22:02:08 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 114 ms / 5,000 ms |
コード長 | 5,239 bytes |
コンパイル時間 | 2,283 ms |
コンパイル使用メモリ | 228,556 KB |
実行使用メモリ | 9,216 KB |
最終ジャッジ日時 | 2024-11-20 10:13:30 |
合計ジャッジ時間 | 4,083 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 19 ms
6,816 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,820 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 3 ms
6,820 KB |
testcase_08 | AC | 3 ms
6,816 KB |
testcase_09 | AC | 4 ms
6,820 KB |
testcase_10 | AC | 3 ms
6,820 KB |
testcase_11 | AC | 3 ms
6,820 KB |
testcase_12 | AC | 64 ms
8,576 KB |
testcase_13 | AC | 45 ms
8,448 KB |
testcase_14 | AC | 42 ms
8,320 KB |
testcase_15 | AC | 27 ms
6,820 KB |
testcase_16 | AC | 29 ms
6,820 KB |
testcase_17 | AC | 81 ms
7,168 KB |
testcase_18 | AC | 41 ms
7,552 KB |
testcase_19 | AC | 111 ms
9,216 KB |
testcase_20 | AC | 114 ms
9,088 KB |
testcase_21 | AC | 94 ms
9,216 KB |
testcase_22 | AC | 80 ms
9,088 KB |
testcase_23 | AC | 7 ms
6,820 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 11 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,820 KB |
testcase_27 | AC | 22 ms
6,816 KB |
testcase_28 | AC | 21 ms
6,820 KB |
testcase_29 | AC | 2 ms
6,820 KB |
testcase_30 | AC | 4 ms
6,816 KB |
testcase_31 | AC | 70 ms
7,808 KB |
testcase_32 | AC | 4 ms
6,820 KB |
testcase_33 | AC | 29 ms
6,816 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using int64 = long long; const int mod = 1e9 + 7; // const int mod = 998244353; const int64 infll = (1LL << 62) - 1; const int inf = (1 << 30) - 1; struct IoSetup { IoSetup() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); } } iosetup; template< typename T1, typename T2 > ostream &operator<<(ostream &os, const pair< T1, T2 > &p) { os << p.first << " " << p.second; return os; } template< typename T1, typename T2 > istream &operator>>(istream &is, pair< T1, T2 > &p) { is >> p.first >> p.second; return is; } template< typename T > ostream &operator<<(ostream &os, const vector< T > &v) { for(int i = 0; i < (int) v.size(); i++) { os << v[i] << (i + 1 != v.size() ? " " : ""); } return os; } template< typename T > istream &operator>>(istream &is, vector< T > &v) { for(T &in: v) is >> in; return is; } template< typename T1, typename T2 > inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); } template< typename T1, typename T2 > inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); } template< typename T = int64 > vector< T > make_v(size_t a) { return vector< T >(a); } template< typename T, typename... Ts > auto make_v(size_t a, Ts... ts) { return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...)); } template< typename T, typename V > typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) { t = v; } template< typename T, typename V > typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) { for(auto &e: t) fill_v(e, v); } template< typename F > struct FixPoint : F { FixPoint(F &&f) : F(forward< F >(f)) {} template< typename... Args > decltype(auto) operator()(Args &&... args) const { return F::operator()(*this, forward< Args >(args)...); } }; template< typename F > inline decltype(auto) MFP(F &&f) { return FixPoint< F >{forward< F >(f)}; } /** * @brief Graph Template(グラフテンプレート) */ template< typename T = int > struct Edge { int from, to; T cost; int idx; Edge() = default; Edge(int from, int to, T cost = 1, int idx = -1) : from(from), to(to), cost(cost), idx(idx) {} operator int() const { return to; } }; template< typename T = int > struct Graph { vector< vector< Edge< T > > > g; int es; Graph() = default; explicit Graph(int n) : g(n), es(0) {} size_t size() const { return g.size(); } void add_directed_edge(int from, int to, T cost = 1) { g[from].emplace_back(from, to, cost, es++); } void add_edge(int from, int to, T cost = 1) { g[from].emplace_back(from, to, cost, es); g[to].emplace_back(to, from, cost, es++); } void read(int M, int padding = -1, bool weighted = false, bool directed = false) { for(int i = 0; i < M; i++) { int a, b; cin >> a >> b; a += padding; b += padding; T c = T(1); if(weighted) cin >> c; if(directed) add_directed_edge(a, b, c); else add_edge(a, b, c); } } inline vector< Edge< T > > &operator[](const int &k) { return g[k]; } inline const vector< Edge< T > > &operator[](const int &k) const { return g[k]; } }; template< typename T = int > using Edges = vector< Edge< T > >; /** * @brief Dijkstra(単一始点最短路) * @docs docs/dijkstra.md */ template< typename T > struct ShortestPath { vector< T > dist; vector< int > from, id; }; template< typename T > ShortestPath< T > dijkstra(const Graph< T > &g, int s) { const auto INF = numeric_limits< T >::max(); vector< T > dist(g.size(), INF); vector< int > from(g.size(), -1), id(g.size(), -1); using Pi = pair< T, int >; priority_queue< Pi, vector< Pi >, greater<> > que; dist[s] = 0; que.emplace(dist[s], s); while(!que.empty()) { T cost; int idx; tie(cost, idx) = que.top(); que.pop(); if(dist[idx] < cost) continue; for(auto &e: g.g[idx]) { auto next_cost = cost + e.cost; if(dist[e.to] <= next_cost) continue; dist[e.to] = next_cost; from[e.to] = idx; id[e.to] = e.idx; que.emplace(dist[e.to], e.to); } } return {dist, from, id}; } int main() { int N, M, K; cin >> N >> M >> K; vector< int > R(K); cin >> R; for(auto &r: R) --r; Graph<> g(N); vector< int > A(M), B(M), C(M); for(int i = 0; i < M; i++) { cin >> A[i] >> B[i] >> C[i]; --A[i], --B[i]; g.add_edge(A[i], B[i], C[i]); } vector< map< int, int64 > > dp(1 << K); vector< vector< int > > dist(N); auto get_dist = [&](int u, int v) { if(dist[u].empty()) dist[u] = dijkstra(g, u).dist; return dist[u][v]; }; auto rec = MFP([&](auto rec, int bit, int u) -> int64 { if(bit == (1 << K) - 1) return get_dist(N - 1, u); if(dp[bit].count(u)) return dp[bit][u]; int64 ret = infll; for(int i = 0; i < K; i++) { if((bit >> i) & 1) continue; chmin(ret, rec(bit | (1 << i), B[R[i]]) + get_dist(A[R[i]], u) + C[R[i]]); chmin(ret, rec(bit | (1 << i), A[R[i]]) + get_dist(B[R[i]], u) + C[R[i]]); } return dp[bit][u] = ret; }); cout << rec(0, 0) << "\n"; }