結果
問題 | No.1812 Uribo Road |
ユーザー | tokusakurai |
提出日時 | 2022-01-14 22:22:59 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 109 ms / 5,000 ms |
コード長 | 6,085 bytes |
コンパイル時間 | 3,247 ms |
コンパイル使用メモリ | 227,792 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-20 11:47:31 |
合計ジャッジ時間 | 4,678 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
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 1 ms
6,820 KB |
testcase_03 | AC | 6 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 3 ms
6,816 KB |
testcase_09 | AC | 5 ms
6,816 KB |
testcase_10 | AC | 3 ms
6,820 KB |
testcase_11 | AC | 3 ms
6,816 KB |
testcase_12 | AC | 44 ms
6,816 KB |
testcase_13 | AC | 20 ms
6,820 KB |
testcase_14 | AC | 18 ms
6,816 KB |
testcase_15 | AC | 34 ms
6,816 KB |
testcase_16 | AC | 28 ms
6,820 KB |
testcase_17 | AC | 90 ms
6,820 KB |
testcase_18 | AC | 19 ms
6,820 KB |
testcase_19 | AC | 109 ms
6,820 KB |
testcase_20 | AC | 109 ms
6,816 KB |
testcase_21 | AC | 87 ms
6,820 KB |
testcase_22 | AC | 68 ms
6,820 KB |
testcase_23 | AC | 5 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,820 KB |
testcase_25 | AC | 15 ms
6,816 KB |
testcase_26 | AC | 3 ms
6,820 KB |
testcase_27 | AC | 14 ms
6,820 KB |
testcase_28 | AC | 28 ms
6,816 KB |
testcase_29 | AC | 2 ms
6,816 KB |
testcase_30 | AC | 4 ms
6,816 KB |
testcase_31 | AC | 56 ms
6,820 KB |
testcase_32 | AC | 3 ms
6,816 KB |
testcase_33 | AC | 21 ms
6,820 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < n; i++) #define rep2(i, x, n) for (int i = x; i <= n; i++) #define rep3(i, x, n) for (int i = x; i >= n; i--) #define each(e, v) for (auto &e : v) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); if (v.empty()) cout << '\n'; } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } template <typename S, typename T> pair<S, T> operator+(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first + q.first, p.second + q.second); } template <typename S, typename T> pair<S, T> operator-(const pair<S, T> &p, const pair<S, T> &q) { return make_pair(p.first - q.first, p.second - q.second); } template <typename S, typename T> istream &operator>>(istream &is, pair<S, T> &p) { S a; T b; is >> a >> b; p = make_pair(a, b); return is; } template <typename S, typename T> ostream &operator<<(ostream &os, const pair<S, T> &p) { return os << p.first << ' ' << p.second; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; const int MOD = 1000000007; // const int MOD = 998244353; template <typename T, bool directed = false> struct Weighted_Graph { struct edge { int to; T cost; int id; edge(int to, T cost, int id) : to(to), cost(cost), id(id) {} }; vector<vector<edge>> es; const T INF_T = numeric_limits<T>::max() / 2; const int n; int m; vector<T> d; vector<int> pre_v, pre_e; vector<int> id; Weighted_Graph(int n) : es(n), n(n), m(0), d(n), pre_v(n), pre_e(n) {} void add_edge(int from, int to, T cost) { es[from].emplace_back(to, cost, m); if (!directed) es[to].emplace_back(from, cost, m); m++; } T dijkstra(int s, int t = 0) { fill(begin(d), end(d), INF_T); using P = pair<T, int>; priority_queue<P, vector<P>, greater<P>> que; que.emplace(d[s] = 0, s); while (!que.empty()) { auto [p, i] = que.top(); que.pop(); if (p > d[i]) continue; for (auto &e : es[i]) { // if (id[e.id] != -1) continue; if (d[i] + e.cost < d[e.to]) { pre_v[e.to] = i, pre_e[e.to] = e.id; que.emplace(d[e.to] = d[i] + e.cost, e.to); } } } return d[t]; } vector<int> shortest_path(int s, int t, bool use_id = false) { if (dijkstra(s, t) == INF_T) return {}; vector<int> ret; for (int now = t; now != s; now = pre_v[now]) ret.push_back(use_id ? pre_e[now] : now); if (!use_id) ret.push_back(s); reverse(begin(ret), end(ret)); return ret; } T solve(vector<int> R, vector<int> vs) { int K = sz(R); id.assign(m, -1); rep(i, K) id[R[i]] = i; int L = sz(vs); vector<int> id2(n, -1); rep(i, L) id2[vs[i]] = i; vector<vector<T>> dist(L, vector<T>(L)); rep(i, L) { dijkstra(vs[i]); rep(j, L) dist[i][j] = d[vs[j]]; } // rep(i, L) print(dist[i]); vector<vector<edge>> es2(L); rep(i, n) { each(e, es[i]) { if (id[e.id] != -1) es2[id2[i]].eb(id2[e.to], e.cost, id[e.id]); } } vector<vector<T>> dp(1 << K, vector(L, INF_T)); dp[0][0] = 0; rep(i, 1 << K) { rep(j, L) { if (dp[i][j] == INF_T) continue; rep(k, L) { ll tmp = dp[i][j] + dist[j][k]; each(e, es2[k]) { if (flg(i, e.id)) continue; int ni = i | (1 << e.id); int nj = e.to; chmin(dp[ni][nj], tmp + e.cost); } } } // print(dp[i]); } T ret = INF_T; rep(i, L) chmin(ret, dp.back()[i] + dist[i][L - 1]); return ret; } }; int main() { int N, M, K; cin >> N >> M >> K; vector<int> R(K); rep(i, K) { cin >> R[i]; R[i]--; } Weighted_Graph<ll> G(N); vector<int> vs = {0, N - 1}; rep(i, M) { int u, v; ll c; cin >> u >> v >> c; u--, v--; G.add_edge(u, v, c); rep(j, K) { if (R[j] == i) vs.eb(u), vs.eb(v); } } rearrange(vs); // print(vs); cout << G.solve(R, vs) << '\n'; }