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Submission #857782

# Submission time Handle Problem Language Result Execution time Memory
857782 2023-10-06T23:08:55 Z teesla Bosses (BOI16_bosses) C++17
100 / 100
 518 ms 712 KB 
#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> adj;
vector<int> vis;

int res = 0;

void bfs(int x){

    queue<pair<int,int>> q;
    q.push({x,1});
    vis[x] = 1;

    while(!q.empty()){

        auto [a,b] = q.front();q.pop();
        if(vis[a]< b) continue;

        res += b;

        for(auto i: adj[a]){

            if(vis[i] != -1) continue;
            vis[i] = b + 1;
            q.push({i, vis[i]});
        }

    }
}

int main(){

    int n; cin >> n;
    adj.resize(n);

    for(int i=0; i<n; i++){

        int k; cin >> k;

        for(int j =0; j<k; j++){
            int a; cin >> a; a--;
            adj[a].push_back(i);
        }
    }

    int menor = -1;

    for(int i=0; i<n; i++){
        vis.assign(n,-1);

        res = 0;
        bfs(i);

        bool ok = 1;

        for(int j =0; j<n; j++) {
            if(vis[j] == -1) ok = 0;
        }

        if(!ok) continue;
        if(menor == -1) menor =res;
        else menor = min(menor, res);
    }

    cout << menor << endl;

}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 4 ms 348 KB Output is correct
13 Correct 4 ms 520 KB Output is correct
14 Correct 128 ms 628 KB Output is correct
15 Correct 22 ms 604 KB Output is correct
16 Correct 518 ms 708 KB Output is correct
17 Correct 498 ms 708 KB Output is correct
18 Correct 490 ms 712 KB Output is correct