Submission #368055

#	Time	Username	Problem	Language	Result	Execution time	Memory
368055		leinad2	Bosses (BOI16_bosses)	C++17	100 / 100	843 ms	748 KiB

bosses

#include<bits/stdc++.h>
using namespace std;
vector<int>adj[5010];
int n, i, j, k, a, b, ans=1e9;
int main()
{
    ios_base::sync_with_stdio(!cin.tie(NULL));
    for(cin>>n;i++<n;)
    {
        cin>>a;
        while(a--)
        {
            cin>>b;
            adj[b].push_back(i);
        }
    }
    for(i=0;i++<n;)
    {
        int dist[5010]={};
        dist[i]=1;
        queue<int>q;
        q.push(i);
        while(q.size())
        {
            a=q.front();
            q.pop();
            for(j=0;j<adj[a].size();j++)
            {
                if(!dist[adj[a][j]])
                {
                    dist[adj[a][j]]=dist[a]+1;
                    q.push(adj[a][j]);
                }
            }
        }
        int ret=0;
        for(j=0;j++<n;)
        {
            if(dist[j]==0)goto w;
            ret+=dist[j];
        }
        ans=min(ans, ret);
        w:;
    }
    cout<<ans;
}

Compilation message (stderr)

bosses.cpp: In function 'int main()':
bosses.cpp:27:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |             for(j=0;j<adj[a].size();j++)
      |                     ~^~~~~~~~~~~~~~

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