結果
問題 | No.848 なかよし旅行 |
ユーザー | ningenMe |
提出日時 | 2019-07-06 10:23:52 |
言語 | C++11 (gcc 11.4.0) |
結果 |
CE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 4,138 bytes |
コンパイル時間 | 1,757 ms |
コンパイル使用メモリ | 163,280 KB |
最終ジャッジ日時 | 2024-11-14 21:29:57 |
合計ジャッジ時間 | 2,432 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。(リジャッジ後のコンパイルエラーは公開されます)
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
コンパイルメッセージ
main.cpp:23:25: error: ‘make_v’ function uses ‘auto’ type specifier without trailing return type 23 | template<typename... T> auto make_v(size_t N,T... t){return vector<decltype(make_v(t...))>(N,make_v(t...));} | ^~~~ main.cpp:23:25: note: deduced return type only available with ‘-std=c++14’ or ‘-std=gnu++14’
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ull = unsigned long long; #define REP(i,n) for(long long i = 0; i < (n); i++) #define FOR(i, m, n) for(long long i = (m);i < (n); ++i) #define ALL(obj) (obj).begin(),(obj).end() #define SPEED cin.tie(0);ios::sync_with_stdio(false); template<class T> using V = vector<T>; template<class T, class U> using P = pair<T, U>; template<class T> using PQ = priority_queue<T>; template<class T> using PQR = priority_queue<T,vector<T>,greater<T>>; constexpr ll MOD = (ll)1e9 + 7; constexpr ll MOD2 = 998244353; constexpr ll HIGHINF = (ll)1e18; constexpr ll LOWINF = (ll)1e15; constexpr long double PI = 3.1415926535897932384626433; template<typename T> vector<T> make_v(size_t N,T init){return vector<T>(N,init);} template<typename... T> auto make_v(size_t N,T... t){return vector<decltype(make_v(t...))>(N,make_v(t...));} template <class T> void corner(bool flg, T hoge) {if (flg) {cout << hoge << endl; exit(0);}} template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;} template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;} template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;} template <template <class tmp> class T, class U> ostream &operator<<(ostream &o, const T<U> &obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr)o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} void print(void) {cout << endl;} template <class Head> void print(Head&& head) {cout << head;print();} template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);} template <class T> void chmax(T& a, const T b){a=max<T>(a,b);} template <class T> void chmin(T& a, const T b){a=min<T>(a,b);} void YN(bool flg) {cout << ((flg) ? "YES" : "NO") << endl;} void Yn(bool flg) {cout << ((flg) ? "Yes" : "No") << endl;} void yn(bool flg) {cout << ((flg) ? "yes" : "no") << endl;} //Dijkstra template<class T> class Dijkstra { public: int N; T inf; vector<T> cost; vector<vector<pair<T, int>>> edge; Dijkstra(const int N, T inf) : N(N), inf(inf),cost(N), edge(N) { } void make_edge(int from, int to, T w) { edge[from].push_back({ w,to }); } void solve(int start) { for(int i = 0; i < N; ++i) cost[i] = inf; priority_queue<pair<T, int>, vector<pair<T, int>>, greater<pair<T, int>>> pq; cost[start] = 0; pq.push({ 0,start }); while (!pq.empty()) { T v = pq.top().first; int from = pq.top().second; pq.pop(); for (auto u : edge[from]) { T w = v + u.first; int to = u.second; if (w < cost[to]) { cost[to] = w; pq.push({ w,to }); } } } return; } }; int main() { ll N,M,P,Q,T; cin >> N >> M >> P >> Q >> T; P--,Q--; Dijkstra<ll> dijk(N,LOWINF); for(int i = 0; i < M; ++i){ int a,b,c; cin >> a >> b >> c; a--,b--; dijk.make_edge(a,b,c); dijk.make_edge(b,a,c); } auto cost = make_v(N,N,0LL); for(int i = 0; i < N; ++i){ if(i==0||i==P||i==Q){ dijk.solve(i); cost[i] = dijk.cost; } } corner(cost[0][P]+cost[P][Q]+cost[Q][0]<=T,T); ll ans = -1; for(int i = 0; i < N; ++i){ for(int j = 0; j < N; ++j){ ll sum = 0; sum += cost[0][i]; sum += max(cost[P][i]+cost[P][j],cost[Q][i]+cost[Q][j]); sum += cost[0][j]; if(sum<=T) chmax(ans,T - max(cost[P][i]+cost[P][j],cost[Q][i]+cost[Q][j])); } } cout << ans << endl; return 0; }