Submission #384075

#	Time	Username	Problem	Language	Result	Execution time	Memory
384075		nguyen31hoang08minh2003	Ceste (COCI17_ceste)	C++14	64 / 160	2570 ms	63724 KiB

ceste

#include <bits/stdc++.h>
#define fore(i, a, b) for (int i = (a), _b = (b); i < _b; ++i)
#define fort(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define ford(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
using namespace std;

template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};

typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
typedef pair<ii, int> Edge;

const int maxN = 2005;
const ll inf = 1e9 + 31082003;

int n, m;
ll dc[maxN][maxN], dt[maxN][maxN], res[maxN];
vector<Edge> adj[maxN];

void Input() {
    int a, b, c, t;
    cin >> n >> m;
    fort(_, 1, m) {
        cin >> a >> b >> t >> c;
        adj[a].pb(Edge(ii(t, c), b));
        adj[b].pb(Edge(ii(t, c), a));
    }
}

void Dijkstra(const int s, ll d[], function<ll(Edge)> cost) {
    priority_queue<ii, vii, greater<ii> > pq;
    int u, v;
    ll w;
    fort(i, 1, n)
        d[i] = inf;
    d[s] = 0;
    pq.push(ii(0, s));
    while (!pq.empty()) {
        u = pq.top().se;
        w = pq.top().fi;
        pq.pop();
        if (d[u] != w)
            continue;
        for (const Edge &e : adj[u]) {
            w = cost(e);
            v = e.se;
            if (mini(d[v], d[u] + w))
                pq.push(ii(d[v], v));
        }
    }
}

void dfs(const int u, const int x, const ll wt, const ll wc) {
    static bool vis[maxN];
    mini(res[u], wt * wc);
    if (u == x ||
        vis[u] ||
        (wt + dt[u][x]) * (wc + dc[u][x]) >= res[x] ||
        dt[u][x] >= inf || dc[u][x] >= inf)
        return;
    vis[u] = true;
    for (const Edge &e : adj[u])
        dfs(e.se, x, wt + e.fi.fi, wc + e.fi.se);
    vis[u] = false;
}

void Solve() {
    fort(i, 1, n) {
        Dijkstra(i, dt[i], [](const Edge &e) -> ll {return e.fi.fi;});
        Dijkstra(i, dc[i], [](const Edge &e) -> ll {return e.fi.se;});
        res[i] = inf * inf;
    }
    fort(i, 2, n) {
        dfs(1, i, 0, 0);
        cout << (res[i] < inf ? res[i] : -1) << '\n';
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    Input();
    Solve();
    return 0;
}

• Subtask 1: 16 / 16
• Subtask 2: 16 / 16
• Subtask 3: 16 / 16
• Subtask 4: 16 / 16
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 16
• Subtask 8: 0 / 16
• Subtask 9: 0 / 16
• Subtask 10: 0 / 16