結果

問題 No.2387 Yokan Factory
ユーザー pitPpitP
提出日時 2023-07-21 21:50:07
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 634 ms / 5,000 ms
コード長 3,245 bytes
コンパイル時間 4,334 ms
コンパイル使用メモリ 272,380 KB
実行使用メモリ 18,812 KB
最終ジャッジ日時 2023-10-21 21:48:51
合計ジャッジ時間 9,445 ms
ジャッジサーバーID
(参考情報)
judge15 / judge14
このコードへのチャレンジ
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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
4,348 KB
testcase_01 AC 2 ms
4,348 KB
testcase_02 AC 2 ms
4,348 KB
testcase_03 AC 2 ms
4,348 KB
testcase_04 AC 2 ms
4,348 KB
testcase_05 AC 2 ms
4,348 KB
testcase_06 AC 2 ms
4,348 KB
testcase_07 AC 1 ms
4,348 KB
testcase_08 AC 1 ms
4,348 KB
testcase_09 AC 2 ms
4,348 KB
testcase_10 AC 2 ms
4,348 KB
testcase_11 AC 1 ms
4,348 KB
testcase_12 AC 2 ms
4,348 KB
testcase_13 AC 2 ms
4,348 KB
testcase_14 AC 2 ms
4,348 KB
testcase_15 AC 309 ms
18,812 KB
testcase_16 AC 184 ms
17,924 KB
testcase_17 AC 435 ms
18,620 KB
testcase_18 AC 416 ms
17,856 KB
testcase_19 AC 401 ms
12,972 KB
testcase_20 AC 287 ms
11,268 KB
testcase_21 AC 634 ms
16,740 KB
testcase_22 AC 275 ms
10,860 KB
testcase_23 AC 439 ms
13,244 KB
testcase_24 AC 277 ms
11,812 KB
testcase_25 AC 24 ms
6,832 KB
testcase_26 AC 46 ms
9,812 KB
testcase_27 AC 53 ms
10,712 KB
testcase_28 AC 4 ms
4,348 KB
testcase_29 AC 5 ms
4,348 KB
testcase_30 AC 5 ms
4,348 KB
testcase_31 AC 4 ms
4,348 KB
testcase_32 AC 3 ms
4,348 KB
testcase_33 AC 2 ms
4,348 KB
testcase_34 AC 5 ms
4,348 KB
testcase_35 AC 2 ms
4,348 KB
testcase_36 AC 3 ms
4,348 KB
testcase_37 AC 2 ms
4,348 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); }
istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); }
istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } 

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define rep(i,n) for (int i = 0;i < (int)(n); i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define my_sort(x) sort(x.begin(), x.end())
#define my_max(x) *max_element(all(x))
#define my_min(x) *min_element(all(x))
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const int INF = (1<<30) - 1;
const ll LINF = (1LL<<62) - 1;
const int MOD = 998244353;
const int MOD2 = 1e9+7;
const double PI = acos(-1);
vector<int> di = {1,0,-1,0};
vector<int> dj = {0,1,0,-1};

#ifdef LOCAL
#  include <debug_print.hpp>
#  define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define debug(...) (static_cast<void>(0))
#endif

struct Edge{
    ll cost;
    int to;
};
using Graph = vector<vector<Edge>>;
vector<ll> dijkstra(int st, Graph &g){
    int N = g.size();
    vector<ll> dist(N,LINF);
    dist[st] = 0ll;
    using pli = pair<ll,int>;
    priority_queue<pli,vector<pli>,greater<pli>> pq;
    pq.emplace(pli{0ll,st});
    while(!pq.empty()){
        ll time = pq.top().first;
        int now = pq.top().second;
        pq.pop();
        if (time > dist[now])continue;
        for(auto e:g[now]){
            ll c = e.cost;
            int nxt = e.to;
            if (c + time < dist[nxt]){
                dist[nxt] = c + time;
                pq.push(pli{c+time,nxt});
            }
        }
    }
    return dist;
}

int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    int N,M; cin >> N >> M;
    ll X; cin >> X;
    vector<int> u(M), v(M);
    vector<ll> a(M), b(M);
    rep(i,M){
        cin >> u[i] >> v[i] >> a[i] >> b[i];
        u[i]--;
        v[i]--;
    }
    // 大きさ1
    Graph g1(N);
    rep(i,M){
        g1[u[i]].push_back(Edge{a[i], v[i]});
        g1[v[i]].push_back(Edge{a[i], u[i]});
    }
    auto dist1 = dijkstra(0, g1);
    if (dist1[N - 1] > X){
        cout << -1 << endl;
    }
    else{
        ll ok = 0, ng = 1LL<<30;
        while(abs(ok - ng) > 1){
            ll mid = (ok + ng) / 2;
            Graph g(N);
            rep(i,M){
                if (b[i] >= mid){
                    g[u[i]].push_back(Edge{a[i], v[i]});
                    g[v[i]].push_back(Edge{a[i], u[i]});
                }
            }
            auto dist = dijkstra(0, g);
            debug(dist, mid, ok, ng);
            if (dist[N - 1] <= X) ok = mid;
            else ng = mid;
        }
        cout << ok << endl;
    }
}
0