Submission #114145

#	Time	Username	Problem	Language	Result	Execution time	Memory
114145		ahmad_salah	Bosses (BOI16_bosses)	C++14	0 / 100	3 ms	640 KiB

bosses

#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> neww(5000);
int res;

int solve(int node) {
    int r = 1;

    for (int x : neww[node])
        r += solve(x);

    res += r;
    return r;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n, ans = 2e9;
    cin >> n;
    vector<int> adj[n];
    bool v[n];

    for (int i = 0; i < n; i++) {
        int t;
        cin >> t;
        while (t--) {
            int x;
            cin >> x;
            x--;
            adj[x].push_back(i);
        }
    }

    for (int i = 0; i < n; i++) {
        queue<int> q;
        q.push(i);
        memset(v, 0, sizeof v);
        vector<vector<int>> empty(5000);
        neww.swap(empty);

        while (!q.empty()) {
            int cur = q.front();
            q.pop();
            v[cur] = 1;

            for (int x : adj[cur])
                if (!v[x])
                    neww[cur].push_back(x), q.push(x);
        }

        if (accumulate(v, v + n, 0) == n) {
            res = 0;
            solve(i);

            ans = min(ans, res);
        }
    }

    cout << ans << '\n';

    return 0;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 45
• Subtask 3: 0 / 33