Submission #1178775

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178775		peteza	Bosses (BOI16_bosses)	C++20	100 / 100	401 ms	932 KiB

bosses

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

int n, a, b;
vector<int> adj[5005];
bool vis[5005];
ll ans = LLONG_MAX;
queue<pair<int, int>> q;

int main() {
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n;
    for(int i=1;i<=n;i++) {
        cin >> a;
        while(a--) {
            cin >> b;
            adj[b].push_back(i);
        }
    }
    for(int i=1;i<=n;i++) {
        q.emplace(i, 1);
        ll sum = 0;
        memset(vis, 0, sizeof vis);
        while(!q.empty()) {
            auto e = q.front(); q.pop();
            if(vis[e.first]) continue;
            vis[e.first] = 1;
            sum += e.second;
            for(auto &E:adj[e.first])
                q.emplace(E, e.second+1);
        }
        bool yes = 1;
        for(int j=1;j<=n && yes;j++) yes &= vis[j]; 
        if(yes) ans = min(ans, sum);
    }
    cout << ans;
}

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