Submission #166916

#	Time	Username	Problem	Language	Result	Execution time	Memory
166916		Zelja	Bosses (BOI16_bosses)	C++14	100 / 100	934 ms	988 KiB

bosses

#include <bits/stdc++.h>

using namespace std;
int n,k,pom;
vector<int> mat[5003];
int dist[5003];
queue<int> q;
long long cnt[5003],res;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);

    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> k;
        for(int j = 0; j < k; j++){
            cin >> pom;
            mat[pom].push_back(i);
        }
    }

    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= n; j++)
            dist[j] = 9999999;


        dist[i] = 1;
        q.push(i);
        while(!q.empty()){
            pom = q.front();
            q.pop();
            for(auto x: mat[pom]){
                if(dist[x] != 9999999)
                    continue;
                dist[x] = dist[pom] + 1;
                q.push(x);
            }
        }

        for(int j = 1; j <= n; j++){
            cnt[i] += dist[j];
        }
    }

    res = cnt[1];
    for(int i = 2; i <= n; i++){
        res = min(res,cnt[i]);
    }
    cout << res;
    return 0;
}

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