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Submission #695227

# Submission time Handle Problem Language Result Execution time Memory
695227 2023-02-04T20:03:30 Z Abito Bosses (BOI16_bosses) C++14
100 / 100
 720 ms 748 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define F first
#define S second
#define int long long
#define ep insert
const int N=5005;
int n,p[N],dp[N];
vector<int> adj[N];
vector<int> q;
void bfs(int node){
    q.pb(node);
    for (int i=0;i<q.size();i++){
        for (auto u:adj[q[i]]){
            if (p[u]) continue;
            p[u]=q[i];
            q.pb(u);
        }
    }return;
}
void getans(){
    reverse(q.begin(),q.end());
    for (int i=0;i<q.size()-1;i++) dp[p[q[i]]]+=dp[q[i]];
    return;
}
int32_t main(){
    cin>>n;
    for (int i=1;i<=n;i++){
        int x;cin>>x;
        while (x--){
            int y;cin>>y;
            adj[y].pb(i);
        }
    }
    int ans=INT_MAX;
    for (int i=1;i<=n;i++){
        q.clear();
        for (int i=1;i<=n;i++){
            p[i]=0;
            dp[i]=1;
        }p[i]=-1;
        bfs(i);
        if (q.size()<n) continue;
        getans();
        int s=0;
        for (int i=1;i<=n;i++) s+=dp[i];
        ans=min(ans,s);
    }cout<<ans<<endl;
    return 0;
}

Compilation message

bosses.cpp: In function 'void bfs(long long int)':
bosses.cpp:14:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i=0;i<q.size();i++){
      |                  ~^~~~~~~~~
bosses.cpp: In function 'void getans()':
bosses.cpp:24:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for (int i=0;i<q.size()-1;i++) dp[p[q[i]]]+=dp[q[i]];
      |                  ~^~~~~~~~~~~
bosses.cpp: In function 'int32_t main()':
bosses.cpp:44:21: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   44 |         if (q.size()<n) continue;
      |             ~~~~~~~~^~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 5 ms 468 KB Output is correct
13 Correct 4 ms 596 KB Output is correct
14 Correct 101 ms 676 KB Output is correct
15 Correct 19 ms 740 KB Output is correct
16 Correct 457 ms 748 KB Output is correct
17 Correct 720 ms 744 KB Output is correct
18 Correct 719 ms 740 KB Output is correct