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Submission #305561

# Submission time Handle Problem Language Result Execution time Memory
305561 2020-09-23T14:08:35 Z vipghn2003 Bosses (BOI16_bosses) C++14
100 / 100
 784 ms 760 KB 
#include<bits/stdc++.h>

using namespace std;
const int N=5005;
int n,d[N];
vector<int>adj[N];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        int m;
        cin>>m;
        while(m--)
        {
            int p;
            cin>>p;
            adj[p].push_back(i);
        }
    }
    long long res=1e18;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++) d[j]=-1;
        queue<int>pq;
        d[i]=1;
        pq.push(i);
        while(!pq.empty())
        {
            int u=pq.front();
            pq.pop();
            for(auto&v:adj[u])
            {
                if(d[v]==-1)
                {
                    d[v]=d[u]+1;
                    pq.push(v);
                }
            }
        }
        bool check=true;
        for(int j=1;j<=n;j++) if(d[j]==-1) check=false;
        if(check)
        {
            long long cur=0;
            for(int j=1;j<=n;j++) cur+=d[j];
            res=min(res,cur);
        }
    }
    cout<<res;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 512 KB Output is correct
7 Correct 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 4 ms 512 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 175 ms 632 KB Output is correct
15 Correct 44 ms 632 KB Output is correct
16 Correct 612 ms 640 KB Output is correct
17 Correct 775 ms 760 KB Output is correct
18 Correct 784 ms 760 KB Output is correct