oj.uz

Submission #1089848

# Submission time Handle Problem Language Result Execution time Memory
1089848 2024-09-17T10:00:38 Z toast12 Cijanobakterije (COCI21_cijanobakterije) C++14
42 / 70
 1000 ms 7624 KB 
#include <bits/stdc++.h>
using namespace std;

const int INF = 1e9;

int n;
vector<bool> visited;
vector<vector<int>> adj;

pair<int, int> diameter(int start) {
    vector<int> dist(n+1, INF);
    queue<int> q;
    q.push(start);
    vector<bool> v(n+1);
    dist[start] = 0;
    int a1 = 0, a2 = 0;
    while (!q.empty()) {
        int cur = q.front();
        q.pop();
        if (dist[cur] > a1) {
            a1 = dist[cur];
            a2 = cur;
        }
        if (v[cur]) continue;
        visited[cur] = true;
        v[cur] = true;
        for (auto e : adj[cur]) {
            if (dist[cur]+1 < dist[e]) {
                dist[e] = dist[cur]+1;
                q.push(e);
            }
        }
    }
    return {a1, a2};
}

int main() {
    int m;
    cin >> n >> m;
    adj.resize(n+1);
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v; 
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    visited.resize(n+1);
    int ans = 0;
    for (int i = 1; i <= n; i++) {
        if (!visited[i]) {
            int x = diameter(i).second;
            ans += diameter(x).first;
            ans++;
        }
    }
    cout << ans << '\n';
    return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1624 KB Output is correct
2 Correct 15 ms 2732 KB Output is correct
3 Correct 22 ms 3984 KB Output is correct
4 Correct 31 ms 5204 KB Output is correct
5 Correct 55 ms 6412 KB Output is correct
6 Correct 46 ms 7624 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 7372 KB Output is correct
2 Correct 96 ms 1368 KB Output is correct
3 Correct 402 ms 2264 KB Output is correct
4 Correct 858 ms 3220 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 32 ms 1552 KB Output is correct
6 Correct 118 ms 2652 KB Output is correct
7 Correct 261 ms 3700 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 1 ms 484 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #5
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1624 KB Output is correct
2 Correct 15 ms 2732 KB Output is correct
3 Correct 22 ms 3984 KB Output is correct
4 Correct 31 ms 5204 KB Output is correct
5 Correct 55 ms 6412 KB Output is correct
6 Correct 46 ms 7624 KB Output is correct
7 Correct 46 ms 7372 KB Output is correct
8 Correct 96 ms 1368 KB Output is correct
9 Correct 402 ms 2264 KB Output is correct
10 Correct 858 ms 3220 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 32 ms 1552 KB Output is correct
16 Correct 118 ms 2652 KB Output is correct
17 Correct 261 ms 3700 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 484 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 55 ms 7620 KB Output is correct
30 Execution timed out 1047 ms 4184 KB Time limit exceeded
31 Halted 0 ms 0 KB -