Submission #1275846

#	Time	Username	Problem	Language	Result	Execution time	Memory
1275846		namious	Bosses (BOI16_bosses)	C++20	0 / 100	1 ms	572 KiB

bosses

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

#define pii pair<int,int>
#define pb push_back
#define endl '\n'
#define fast_io ios_base::sync_with_stdio(0) ,cin.tie(0),cout.tie(0);
#pragma GCC optimize("O3,unroll-loops")

const int maxn = 5e3+3 , mod = 1e9+7 , inf = 1e9;

int n;
vector <int> adj[maxn];
int dis[maxn];

int32_t main(){
    fast_io

    cin >> n;
    for(int i = 1 ; i <= n ; i++){
        int k;
        cin >> k;
        for(int j = 1 ; j <= k ; j++){
            int x;
            cin >> x;
            adj[x].pb(i);
        }
    }

    int ans = inf;

    for(int i = 1 ; i <= n ; i++){
        for(int j = 1 ; j <= n ; j++) dis[j] = inf;
        queue <int> q;
        q.push(i) , dis[i] = 1;
        while(q.size()){
            int v = q.front();
            q.pop();
            for(auto u : adj[v]) if(dis[v]+1 < dis[u]){
                dis[u] = dis[v]+1 , q.push(u);
            }
        }
        int sum = 0;
        for(int j = 1 ; j <= n ; j++) sum += dis[j];
        ans = min(ans , sum);
    }

    cout << ans << endl;

    return 0;
}

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