結果

問題 No.1601 With Animals into Institute
ユーザー 25__toma
提出日時 2021-07-10 14:27:55
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 738 ms / 3,000 ms
コード長 2,664 bytes
コンパイル時間 2,641 ms
コンパイル使用メモリ 209,324 KB
最終ジャッジ日時 2025-01-23 00:08:58
ジャッジサーバーID
（参考情報） 		judge5 / judge5
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ファイルパターン 結果
sample AC * 3
other AC * 36
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"

using namespace std;
#define REP(k,m,n) for(int (k)=(m);(k)<(n);(k)++)
#define rep(i,n) REP((i),0,(n))
using ll = long long;
using pll = pair<ll, ll>;
using tp3 = tuple<ll, ll, ll>;
constexpr int INF = 1 << 28;
constexpr ll INFL = 1ll << 60;
constexpr int dh[4] = { 0,1,0,-1 };
constexpr int dw[4] = { -1,0,1,0 };
bool isin(const int H, const int W, const int h, const int w) {
    return 0 <= h && h < H && 0 <= w && w < W;
}
// ============ template finished ============
using Pos = ll;
using Dist = ll;
using HaveAnimal = bool;
using Edge = tuple<Pos, Dist, HaveAnimal>;
using Graph = vector<vector<Edge>>;

vector<pll> calc_goals_by_dijkstra(const Graph& graph) {
    const int N = graph.size();
    vector<ll> dists(N, INFL);
    vector<ll> haveAnimalDists(N, INFL);
    priority_queue<pll, vector<pll>, greater<pll>> pq;

    dists[N - 1] = 0;
    pq.push(make_pair(0, N - 1));
    while (!pq.empty()) {
        auto[dist, pos] = pq.top(); pq.pop();
        for (auto[nextPos, edgeDist, haveAnimal] : graph[pos]) {
            ll nextDist = dist + edgeDist;
            if (nextDist < dists[nextPos]) {
                dists[nextPos] = nextDist;
                pq.push(make_pair(nextDist, nextPos));
            }
            if (haveAnimal && nextDist < haveAnimalDists[nextPos]) {
                haveAnimalDists[nextPos] = nextDist;
            }
        }
    }
    vector<pll> goals;
    rep(i, N)if (haveAnimalDists[i] != INFL) {
        goals.push_back(make_pair(haveAnimalDists[i], i));
    }
    return goals;
}

vector<ll> dijkstra_with_many_goals(const Graph& graph, const vector<pll>& goals) {
    const int N = graph.size();
    vector<ll> dists(N, INFL);
    priority_queue<pll, vector<pll>, greater<pll>> pq;
    for (auto[dist, pos] : goals) {
        dists[pos] = dist;
        pq.push(make_pair(dist, pos));
    }
    while (!pq.empty()) {
        auto[dist, pos] = pq.top(); pq.pop();
        for (auto[nextPos, edgeDist, _] : graph[pos]) {
            ll nextDist = dist + edgeDist;
            if (nextDist < dists[nextPos]) {
                dists[nextPos] = nextDist;
                pq.push(make_pair(nextDist, nextPos));
            }
        }
    }
    return dists;
}

int main()
{
    int N, M;
    cin >> N >> M;
    Graph graph(N);
    rep(i, M) {
        ll A, B, C, X;
        cin >> A >> B >> C >> X;
        A--; B--;
        graph[A].push_back(make_tuple(B, C, X == 1));
        graph[B].push_back(make_tuple(A, C, X == 1));
    }
    auto goals = calc_goals_by_dijkstra(graph);
    auto dists = dijkstra_with_many_goals(graph, goals);
    rep(i, N - 1)cout << dists[i] << endl;
    return 0;
}
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