結果
問題 | No.2387 Yokan Factory |
ユーザー |
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提出日時 | 2023-12-08 00:45:55 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 616 ms / 5,000 ms |
コード長 | 2,500 bytes |
コンパイル時間 | 4,847 ms |
コンパイル使用メモリ | 258,164 KB |
最終ジャッジ日時 | 2025-02-18 09:14:39 |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 35 |
ソースコード
#include <bits/stdc++.h>#include <atcoder/all>#define OVERLOAD_REP(_1, _2, _3, name, ...) name#define REP1(i,n) for (auto i = std::decay_t<decltype(n)>{}; (i) != (n); ++(i))#define REP2(i,l,r) for (auto i = (l); (i) != (r); ++(i))#define rep(...) OVERLOAD_REP(__VA_ARGS__, REP2, REP1)(__VA_ARGS__)#define all(a) (a).begin(),(a).end()#define rall(a) (a).rbegin(),(a).rend()using namespace std;using namespace atcoder;using ll = long long;using ull = unsigned long long;using P = pair<long long ,int>;using LP = pair<long long,long long>;using SP = pair<string,string>;using vi = vector<int>;using vl = vector<long long>;using vs = vector<string>;using vc = vector<char>;using mint1 = modint1000000007;using mint9 = modint998244353;const int INF = 2e9;const long long LINF = 2e18;const int di[] = {0,1,0,-1,-1,1,-1,1};const int dj[] = {1,0,-1,0,1,1,-1,-1};template<class T> inline bool chmin(T& a, T b){if(a>b){a=b;return true;}return false;}template<class T> inline bool chmax(T& a, T b){if(a<b){a=b;return true;}return false;}void YesNo (bool ok , const string &s , const string &t) {if(ok) cout << s << endl; else cout << t << endl;}//-----def end-----//struct Edges {int v;long long a , b;Edges (int v , long long a , long long b):v(v) , a(a) , b(b) {}};int main () {int n , m;long long x;cin >> n >> m >> x;vector<vector<Edges>> g(n);rep(i , m) {int u , v;long long a , b;cin >> u >> v >> a >> b;u--; v--;g[u].emplace_back(v , a , b);g[v].emplace_back(u , a , b);}auto dijkstra = [&] (int s , int t , long long wid) -> long long {vector<long long> dist(n , LINF);dist[s] = 0;priority_queue<P,vector<P>,greater<P>> qe;qe.emplace(0 , s);while(!qe.empty()) {auto [n_cost , now] = qe.top();qe.pop();if(dist[now] < n_cost) continue;for(auto [to , a , b] : g[now]) {if(b < wid) continue;if(chmin(dist[to] , n_cost+a)) {qe.emplace(n_cost+a , to);}}}return dist[t];};if(x < dijkstra(0 , n-1 , 1)) {cout << -1 << endl;return 0;}long long l = 1 , r = LINF;while(r-l>1) {long long mid = (l+r)/2;if(dijkstra(0,n-1,mid) <= x) l = mid;else r = mid;}cout << l << endl;return 0;}