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Submission #208089

# Submission time Handle Problem Language Result Execution time Memory
208089 2020-03-10T02:00:05 Z kai824 Bosses (BOI16_bosses) C++17
100 / 100
 959 ms 760 KB 
#include "bits/stdc++.h"
using namespace std;

#define int long long

int n,k,a,ans=INT_MAX;
int dist[5005];
int cur,nodes;
vector<int> children[5005];

int32_t main() {
    ios_base::sync_with_stdio(false);cin.tie(0);
    queue<int> bfs;
    cin>>n;
    for(int x=1;x<=n;x++){
      cin>>k;
      while(k--){
        cin>>a;
        children[a].emplace_back(x);
      }
    }

    for(int x=1;x<=n;x++){
      for(int i=1;i<=n;i++){
        dist[i]=INT_MAX;
      }
      bfs.emplace(x);dist[x]=cur=1;
      nodes=0;
      while(!bfs.empty()){
        nodes++;
        a=bfs.front();
        bfs.pop();
        for(int i=0;i<children[a].size();i++){
          if(dist[children[a][i]]==INT_MAX){
            dist[children[a][i]]=dist[a]+1;
            cur+=dist[a]+1;
            bfs.emplace(children[a][i]);
          }
        }
      }
      if(nodes!=n)continue;
      ans=min(ans,cur);
    }
    cout<<ans<<'\n';
    return 0;
}

Compilation message

bosses.cpp: In function 'int32_t main()':
bosses.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<children[a].size();i++){
                     ~^~~~~~~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 11 ms 504 KB Output is correct
13 Correct 9 ms 632 KB Output is correct
14 Correct 237 ms 636 KB Output is correct
15 Correct 27 ms 632 KB Output is correct
16 Correct 818 ms 760 KB Output is correct
17 Correct 932 ms 632 KB Output is correct
18 Correct 959 ms 632 KB Output is correct