結果
問題 | No.2387 Yokan Factory |
ユーザー |
👑 ![]() |
提出日時 | 2023-07-21 21:51:39 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,303 ms / 5,000 ms |
コード長 | 4,408 bytes |
コンパイル時間 | 20,514 ms |
コンパイル使用メモリ | 268,248 KB |
最終ジャッジ日時 | 2025-02-15 16:46:19 |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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
#pragma GCC target("avx2")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include <algorithm>#include <atcoder/all>#include <bitset>#include <cassert>#include <cmath>#include <ctime>#include <functional>#include <iomanip>#include <iostream>#include <map>#include <queue>#include <random>#include <set>#include <stack>#include <string>#include <tuple>#include <unordered_map>#include <unordered_set>#include <utility>#include <vector>using namespace std;using namespace atcoder;typedef long long ll;#define rep(i, n) for (int i = 0; i < (int)(n); i++)#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)#define repk(i, k, n) for (int i = k; i < (int)(n); i++)#define all(v) v.begin(), v.end()#define mod1 1000000007#define mod2 998244353#define mod3 100000007#define vi vector<int>#define vs vector<string>#define vc vector<char>#define vl vector<ll>#define vb vector<bool>#define vvi vector<vector<int>>#define vvc vector<vector<char>>#define vvl vector<vector<ll>>#define vvb vector<vector<bool>>#define vvvi vector<vector<vector<int>>>#define vvvl vector<vector<vector<ll>>>#define pii pair<int, int>#define pil pair<int, ll>#define pli pair<ll, int>#define pll pair<ll, ll>#define vpii vector<pair<int, int>>#define vpll vector<pair<ll, ll>>#define vvpii vector<vector<pair<int, int>>>#define vvpll vector<vector<pair<ll, ll>>>using mint = modint998244353;template <typename T>void debug(T e) {cerr << e << endl;}template <typename T>void debug(vector<T> &v) {rep(i, v.size()) { cerr << v[i] << " "; }cerr << endl;}template <typename T>void debug(vector<vector<T>> &v) {rep(i, v.size()) {rep(j, v[i].size()) { cerr << v[i][j] << " "; }cerr << endl;}}template <typename T>void debug(vector<pair<T, T>> &v) {rep(i, v.size()) { cerr << v[i].first << " " << v[i].second << endl; }}template <typename T>void debug(set<T> &st) {for (auto itr = st.begin(); itr != st.end(); itr++) {cerr << *itr << " ";}cerr << endl;}template <typename T>void debug(multiset<T> &ms) {for (auto itr = ms.begin(); itr != ms.end(); itr++) {cerr << *itr << " ";}cerr << endl;}template <typename T>void debug(map<T, T> &mp) {for (auto itr = mp.begin(); itr != mp.end(); itr++) {cerr << itr->first << " " << itr->second << endl;}}void debug_out() { cerr << endl; }template <typename Head, typename... Tail>void debug_out(Head H, Tail... T) {cerr << H << " ";debug_out(T...);}ll my_pow(ll x, ll n, ll mod) {// 繰り返し二乗法.x^nをmodで割った余り.ll ret;if (n == 0) {ret = 1;} else if (n % 2 == 1) {ret = (x * my_pow((x * x) % mod, n / 2, mod)) % mod;} else {ret = my_pow((x * x) % mod, n / 2, mod);}return ret;}ll inv(ll x, ll mod) { return my_pow(x, mod - 2, mod); }void dijkstra(vvpll &graph, ll v, vl &dist) {priority_queue<pll, vpll, greater<pll>> pque;pque.push(pll(0, v));dist[v] = 0;while (pque.size()) {pll p = pque.top();pque.pop();if (dist[p.second] != p.first) {continue;}for (auto x : graph[p.second]) {if (dist[x.first] > dist[p.second] + x.second) {dist[x.first] = dist[p.second] + x.second;pque.push(pll(dist[x.first], x.first));}}}}ll INF = 1000000000000000002;int main() {ll N, M, X;cin >> N >> M >> X;vector<ll> u(M);vector<ll> v(M);vector<ll> a(M);vector<ll> b(M);for (ll i = 0; i < M; i++) {cin >> u[i] >> v[i] >> a[i] >> b[i];u[i]--;v[i]--;}ll ok = 0;ll ng = 1000000007;while (ng - ok > 1) {ll mid = (ok + ng) / 2;vector<vector<pll>> graph(N, vector<pll>(0));for (ll i = 0; i < M; i++) {if (mid <= b[i]) {graph[u[i]].push_back(pll(v[i], a[i]));graph[v[i]].push_back(pll(u[i], a[i]));}}vector<ll> dist(N, INF);dijkstra(graph, 0, dist);if (dist[N - 1] <= X) {ok = mid;} else {ng = mid;}}if (ok == 0) {cout << -1 << endl;} else {cout << ok << endl;}}