Submission #971326

#	Time	Username	Problem	Language	Result	Execution time	Memory
971326		detectivebowon	Bosses (BOI16_bosses)	C++17	100 / 100	579 ms	796 KiB

bosses

#include <bits/stdc++.h>
#define ep emplace
#define epb emplace_back
#define int long long
using namespace std;
int n, va[5007], mn = LLONG_MAX, value;
vector<int> adj[5007];
bool visited[5007];
queue<pair<int,int>> q;
signed main()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        int num;
        cin >> num;
        while (num--)
        {
            int v;
            cin >> v;
            adj[v].epb(i);
        }
    }
    for (int i = 1; i <= n; i++)
    {
        q.push({1, i});
        int sum = 0, cnt = 0;
        memset(visited, 0, sizeof(visited));
        while (!q.empty())
        {
            int u = q.front().second, cost = q.front().first;
            q.pop();
            if (visited[u])
                continue;
            visited[u] = true;
            sum += cost;
            cnt++;
            for (auto v : adj[u])
                if (!visited[v])
                    q.push({cost + 1, v});
        }
        if (cnt == n)
            mn = min(mn, sum);
    }
    cout << mn;
}

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