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Submission #1108092

# Submission time Handle Problem Language Result Execution time Memory
1108092 2024-11-02T18:05:38 Z overwatch9 Cijanobakterije (COCI21_cijanobakterije) C++17
70 / 70
 52 ms 11852 KB 
#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e5 + 1;
vector <int> adj[maxn];
bool vis[maxn];
int node = 0, max_dis = -1;
void dfs(int s, int p, int d) {
    if (d > max_dis) {
        node = s;
        max_dis = d;
    }
    vis[s] = true;
    for (auto i : adj[s]) {
        if (i == p)
            continue;
        dfs(i, s, d+1);
    }
}
int main() {
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < m; i++) {
        int a, b;
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    vector <pair <int, int>> endpoints;
    for (int i = 1; i <= n; i++) {
        if (vis[i])
            continue;
        max_dis = -1;
        endpoints.emplace_back();
        dfs(i, i, 0);
        endpoints.back().first = node;
        max_dis = -1;
        dfs(node, node, 0);
        endpoints.back().second = node;
    }

    for (int i = 0; i + 1 < (int)endpoints.size(); i++) {
        int a = endpoints[i].second, b = endpoints[i+1].first;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }

    max_dis = -1;
    dfs(endpoints.back().second, 0, 0);
    cout << max_dis+1 << '\n';

}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 3408 KB Output is correct
2 Correct 18 ms 4176 KB Output is correct
3 Correct 43 ms 4960 KB Output is correct
4 Correct 36 ms 5712 KB Output is correct
5 Correct 42 ms 6472 KB Output is correct
6 Correct 49 ms 7240 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 11852 KB Output is correct
2 Correct 6 ms 4176 KB Output is correct
3 Correct 10 ms 5588 KB Output is correct
4 Correct 15 ms 7124 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2640 KB Output is correct
3 Correct 1 ms 2812 KB Output is correct
4 Correct 1 ms 2640 KB Output is correct
5 Correct 6 ms 3408 KB Output is correct
6 Correct 10 ms 4464 KB Output is correct
7 Correct 14 ms 5200 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2796 KB Output is correct
3 Correct 1 ms 2640 KB Output is correct
4 Correct 1 ms 2640 KB Output is correct
5 Correct 1 ms 2640 KB Output is correct
6 Correct 1 ms 2640 KB Output is correct
7 Correct 1 ms 2800 KB Output is correct
8 Correct 1 ms 2808 KB Output is correct
9 Correct 2 ms 2640 KB Output is correct
10 Correct 2 ms 2640 KB Output is correct
11 Correct 2 ms 2640 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 3408 KB Output is correct
2 Correct 18 ms 4176 KB Output is correct
3 Correct 43 ms 4960 KB Output is correct
4 Correct 36 ms 5712 KB Output is correct
5 Correct 42 ms 6472 KB Output is correct
6 Correct 49 ms 7240 KB Output is correct
7 Correct 52 ms 11852 KB Output is correct
8 Correct 6 ms 4176 KB Output is correct
9 Correct 10 ms 5588 KB Output is correct
10 Correct 15 ms 7124 KB Output is correct
11 Correct 2 ms 2640 KB Output is correct
12 Correct 1 ms 2640 KB Output is correct
13 Correct 1 ms 2812 KB Output is correct
14 Correct 1 ms 2640 KB Output is correct
15 Correct 6 ms 3408 KB Output is correct
16 Correct 10 ms 4464 KB Output is correct
17 Correct 14 ms 5200 KB Output is correct
18 Correct 2 ms 2640 KB Output is correct
19 Correct 1 ms 2796 KB Output is correct
20 Correct 1 ms 2640 KB Output is correct
21 Correct 1 ms 2640 KB Output is correct
22 Correct 1 ms 2640 KB Output is correct
23 Correct 1 ms 2640 KB Output is correct
24 Correct 1 ms 2800 KB Output is correct
25 Correct 1 ms 2808 KB Output is correct
26 Correct 2 ms 2640 KB Output is correct
27 Correct 2 ms 2640 KB Output is correct
28 Correct 2 ms 2640 KB Output is correct
29 Correct 46 ms 7256 KB Output is correct
30 Correct 32 ms 11464 KB Output is correct
31 Correct 45 ms 11624 KB Output is correct
32 Correct 28 ms 11292 KB Output is correct
33 Correct 45 ms 10240 KB Output is correct
34 Correct 33 ms 10752 KB Output is correct
35 Correct 43 ms 11268 KB Output is correct
36 Correct 42 ms 9212 KB Output is correct
37 Correct 43 ms 10184 KB Output is correct
38 Correct 47 ms 7884 KB Output is correct
39 Correct 45 ms 10996 KB Output is correct