Submission #1112143

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112143		ortsac	Bosses (BOI16_bosses)	C++17	100 / 100	519 ms	828 KiB

bosses

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int INF = 0x3f3f3f3f;
const int MAXN = 5010;
vector<int> adj[MAXN];

int32_t main() {
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        while (x--) {
            int a;
            cin >> a;
            adj[a].push_back(i);
        }
    }
    int ans = 0x3f3f3f3f3f3f3f3f;
    for (int i = 1; i <= n; i++) {
        vector<int> dist(n + 1, INF);
        vector<bool> mark(n + 1);
        dist[i] = 1;
        mark[i] = 1;
        queue<int> q;
        q.push(i);
        while (!q.empty()) {
            int v = q.front();
            q.pop();
            for (auto u : adj[v]) {
                if (mark[u]) continue;
                mark[u] = 1;
                dist[u] = dist[v] + 1;
                q.push(u);
            }
        }
        int sum = 0;
        for (int i = 1; i <= n; i++) sum += dist[i];
        ans = min(ans, sum);
    }
    cout << ans << "\n";
}

• Subtask 1: 22 / 22
• Subtask 2: 45 / 45
• Subtask 3: 33 / 33