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Submission #531317

# Submission time Handle Problem Language Result Execution time Memory
531317 2022-02-28T11:51:38 Z devariaota Bosses (BOI16_bosses) C++17
100 / 100
 734 ms 680 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 5002;
vector<int>v[N];
int n;

ll ans = 1e18;

void bfs(int s){
    vector<bool>vis(N, 0);
    queue<pair<int, int>>q;
    vis[s] = true;
    q.emplace(s, 1);

    int cnt = 1;
    ll total = 0;

    while(!q.empty()){
        auto now = q.front(); q.pop();

        total += now.second;

        for(auto x: v[now.first]){
            if(!vis[x]){
                cnt++;
                vis[x] = true;
                q.emplace(x, now.second + 1);
            }
        }
    }

    if(cnt == n) ans = min(ans, total);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n;

    for(int i = 1; i <= n; i++){
        int k; cin >> k;
        while(k--){
            int x; cin >> x;
            v[x].push_back(i);
        }
    }
    
    for(int i = 1; i <= n; i++)
        bfs(i);

    cout << ans << endl;

    return 0;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 4 ms 460 KB Output is correct
13 Correct 4 ms 460 KB Output is correct
14 Correct 156 ms 488 KB Output is correct
15 Correct 3 ms 460 KB Output is correct
16 Correct 601 ms 680 KB Output is correct
17 Correct 700 ms 588 KB Output is correct
18 Correct 734 ms 640 KB Output is correct