oj.uz

Submission #556179

# Submission time Handle Problem Language Result Execution time Memory
556179 2022-05-02T14:47:59 Z Olympia Bosses (BOI16_bosses) C++17
67 / 100
 1500 ms 936 KB 
#include <bits/stdc++.h>
using namespace std;
void dfs (vector<vector<int> > &adj, vector<int>& val, int curNode, int prevNode) {
    //cout << curNode << " " << prevNode << '\n';
    val[curNode] = 1;
    for (int i: adj[curNode]) {
        if (i != prevNode) {
            dfs (adj, val, i, curNode);
            val[curNode] += val[i];
        }
    }
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    vector<vector<int> > adj;
    adj.resize(n);
    for (int i = 0; i < n; i++) {
        int k;
        cin >> k;
        while (k--) {
            int a;
            cin >> a;
            a--;
            adj[a].push_back(i);
        }
    }
    int myMin = INT_MAX;
    for (int i = 0; i < n; i++) {
        queue<int> q;
        q.push(i);
        vector<bool> hasVisited; hasVisited.assign(n, false);
        vector<vector<int> > new_adj(n);
        hasVisited[i] = true;
        while (!q.empty()) {
            int curNode = q.front();
            q.pop();
            for (int j: adj[curNode]) {
                if (!hasVisited[j]) {
                    q.push(j);
                    hasVisited[j] = true;
                    new_adj[curNode].push_back(j);
                }
            }
        }
        bool fine = true;
        for (bool j: hasVisited) {
            if (!j) {
                fine = false;
            }
        }
        if (!fine) {
            continue;
        }
        vector<int> val(n);
        dfs(new_adj, val, i, i);
        int ans = 0;
        for (int j: val) {
            ans += j;
        }
        myMin = min(myMin, ans);
    }
    cout << myMin << '\n';
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 2 ms 212 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 2 ms 212 KB Output is correct
11 Correct 2 ms 212 KB Output is correct
12 Correct 6 ms 448 KB Output is correct
13 Correct 4 ms 340 KB Output is correct
14 Correct 608 ms 936 KB Output is correct
15 Correct 94 ms 688 KB Output is correct
16 Execution timed out 1566 ms 824 KB Time limit exceeded
17 Halted 0 ms 0 KB -