結果

問題 No.1602 With Animals into Institute 2
ユーザー hitonanodehitonanode
提出日時 2021-07-10 16:19:53
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 829 ms / 4,000 ms
コード長 4,564 bytes
コンパイル時間 1,452 ms
コンパイル使用メモリ 113,692 KB
実行使用メモリ 40,448 KB
最終ジャッジ日時 2024-07-02 02:35:44
合計ジャッジ時間 12,352 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge4
このコードへのチャレンジ
（要ログイン）

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
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 8 ms
5,376 KB
testcase_04 AC 8 ms
5,376 KB
testcase_05 AC 12 ms
5,376 KB
testcase_06 AC 533 ms
36,192 KB
testcase_07 AC 531 ms
36,116 KB
testcase_08 AC 829 ms
40,448 KB
testcase_09 AC 768 ms
39,984 KB
testcase_10 AC 764 ms
40,068 KB
testcase_11 AC 760 ms
40,028 KB
testcase_12 AC 726 ms
40,064 KB
testcase_13 AC 726 ms
40,096 KB
testcase_14 AC 728 ms
40,068 KB
testcase_15 AC 676 ms
40,036 KB
testcase_16 AC 673 ms
39,832 KB
testcase_17 AC 685 ms
40,060 KB
testcase_18 AC 10 ms
5,376 KB
testcase_19 AC 11 ms
5,376 KB
testcase_20 AC 11 ms
5,376 KB
testcase_21 AC 10 ms
5,376 KB
testcase_22 AC 10 ms
5,376 KB
testcase_23 AC 11 ms
5,376 KB
testcase_24 AC 10 ms
5,376 KB
testcase_25 AC 10 ms
5,376 KB
testcase_26 AC 10 ms
5,376 KB
testcase_27 AC 2 ms
5,376 KB
testcase_28 AC 2 ms
5,376 KB
testcase_29 AC 2 ms
5,376 KB
testcase_30 AC 2 ms
5,376 KB
testcase_31 AC 2 ms
5,376 KB
testcase_32 AC 2 ms
5,376 KB
testcase_33 AC 2 ms
5,376 KB
testcase_34 AC 2 ms
5,376 KB
testcase_35 AC 2 ms
5,376 KB
testcase_36 AC 2 ms
5,376 KB
testcase_37 AC 2 ms
5,376 KB
testcase_38 AC 2 ms
5,376 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 <cassert>
#include <queue>
#include <tuple>
#include <vector>
// This implementation is based on: https://gist.github.com/wata-orz/d3037bd0b919c76dd9ddc0379e1e3192
template <class T, T INF, class G, G (*op)(G, G), G (*e)()> struct SSSUP {
    int V;
    std::vector<std::vector<std::tuple<int, T, G>>> to;
    SSSUP(int n) : V(n), to(n) { static_assert(INF > 0, "INF must be positive"); }
    void add_edge(int u, int v, T len, G g) {
        assert(u >= 0 and u < V);
        assert(v >= 0 and v < V);
        assert(len >= 0);
        to[u].emplace_back(v, len, g);
        to[v].emplace_back(u, len, g);
    }

    int s;
    std::vector<T> dist_sp, dist;
    std::vector<int> parent, depth;
    std::vector<G> psi;  // psi[path = v0v1...vn] = psi[v0v1] * psi[v1v2] * ... * psi[v(n - 1)vn]

    std::vector<int> uf_ps;
    int find(int x) {
        if (uf_ps[x] == -1) {
            return x;
        } else {
            int r = find(uf_ps[x]);
            return uf_ps[x] = r;
        }
    }
    void unite(int r, int c) { uf_ps[c] = r; }

    void solve(int s_) {
        s = s_;
        assert(s >= 0 and s < V);

        // Solve SSSP
        {
            dist_sp.assign(V, INF);
            depth.assign(V, -1), parent.assign(V, -1);
            psi.assign(V, e());
            std::priority_queue<std::pair<T, int>, std::vector<std::pair<T, int>>, std::greater<std::pair<T, int>>> que;
            dist_sp[s] = 0, depth[s] = 0;
            que.emplace(0, s);
            while (que.size()) {
                T d, l;
                int u, v;
                G g = e();
                std::tie(d, u) = que.top();
                que.pop();
                if (dist_sp[u] != d) continue;
                for (const auto &p : to[u]) {
                    std::tie(v, l, g) = p;
                    const auto d2 = d + l;
                    if (dist_sp[v] > d2) {
                        dist_sp[v] = d2, depth[v] = depth[u] + 1, parent[v] = u, psi[v] = op(psi[u], g);
                        que.emplace(d2, v);
                    }
                }
            }
        }

        // sssup()
        uf_ps.assign(V, -1);
        using P = std::tuple<T, int, int>;
        std::priority_queue<P, std::vector<P>, std::greater<P>> que;
        for (int u = 0; u < V; u++) {
            for (int i = 0; i < int(to[u].size()); i++) {
                int v;
                T l;
                G g = e();
                std::tie(v, l, g) = to[u][i];
                if (u < v and !(op(psi[u], g) == psi[v])) que.emplace(dist_sp[u] + dist_sp[v] + l, u, i);
            }
        }

        dist.assign(V, INF);
        while (que.size()) {
            T h;
            int u0, i;
            std::tie(h, u0, i) = que.top();
            que.pop();
            const int v0 = std::get<0>(to[u0][i]);
            int u = find(u0), v = find(v0);
            std::vector<int> bs;
            while (u != v) {
                if (depth[u] > depth[v]) {
                    bs.push_back(u), u = find(parent[u]);
                } else {
                    bs.push_back(v), v = find(parent[v]);
                }
            }
            for (const int x : bs) {
                unite(u, x);
                dist[x] = h - dist_sp[x];
                for (int i = 0; i < int(to[x].size()); i++) {
                    int y;
                    T l;
                    G g = e();
                    std::tie(y, l, g) = to[x][i];
                    if (op(psi[x], g) == psi[y]) {
                        que.emplace(dist[x] + dist_sp[y] + l, x, i);
                    }
                }
            }
        }
        for (int i = 0; i < V; i++) {
            if (!(psi[i] == e()) and dist_sp[i] < dist[i]) dist[i] = dist_sp[i];
        }
    }
};

struct G {
    unsigned g;
    G(unsigned x) : g(x) {}
    bool operator==(const G &x) const { return g == x.g; }
};
G op(G x, G y) { return G(x.g ^ y.g); }
G e() { return G(0); }

#include <iostream>
using namespace std;
int main() {
    int N, M, K;
    cin >> N >> M >> K;
    constexpr long long INF = 1LL << 60;
    SSSUP<long long, INF, G, op, e> graph(N);

    vector<tuple<int, int, int>> edges;
    while (M--) {
        int a, b, c;
        string x;
        cin >> a >> b >> c >> x;
        unsigned m = 0;
        for (auto c : x) m = m * 2 + c - '0';
        a--, b--;
        graph.add_edge(a, b, c, m);
        graph.add_edge(b, a, c, m);
    }
    graph.solve(N - 1);
    for (int i = 0; i < N - 1; i++) {
        cout << (graph.dist[i] == INF ? -1 : graph.dist[i]) << '\n';
    }
}
0