답안 #878952

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
878952	2023-11-25T17:38:07 Z	Youssif_Elkadi	Cijanobakterije (COCI21_cijanobakterije)	C++17	70 / 70	29 ms	12124 KB

Main

#include <bits/stdc++.h>
using namespace std;
const long long N = 1e5 + 5, mod = 1e9 + 7;
int vis[N], vid;
vector<int> adj[N];
int n, m;
pair<int, int> dfs(int u)
{
    vis[u] = vid;
    int node = u, ret = 0;
    for (auto v : adj[u])
    {
        if (vis[v] != vid)
        {
            pair<int, int> tmp = dfs(v);
            if (tmp.first > ret)
                ret = tmp.first, node = tmp.second;
        }
    }
    return {ret + 1, node};
}
int dia(int x)
{
    vid++;
    x = dfs(x).second;
    vid++;
    return dfs(x).first;
}
int main()
{
    ios_base::sync_with_stdio(0), cin.tie(NULL), cout.tie(NULL);
    cin >> n >> m;
    for (int i = 0; i < m; i++)
    {
        int x, y;
        cin >> x >> y;
        adj[x].push_back(y);
        adj[y].push_back(x);
    }
    int ret = 0;
    for (int i = 1; i <= n; i++)
        if (!vis[i])
            ret += dia(i);
    cout << ret << "\n";
}

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	3420 KB	Output is correct
2	Correct	9 ms	4400 KB	Output is correct
3	Correct	13 ms	5128 KB	Output is correct
4	Correct	16 ms	5980 KB	Output is correct
5	Correct	21 ms	6740 KB	Output is correct
6	Correct	24 ms	7516 KB	Output is correct

Subtask #2

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	27 ms	12124 KB	Output is correct
2	Correct	4 ms	3160 KB	Output is correct
3	Correct	4 ms	3676 KB	Output is correct
4	Correct	7 ms	4444 KB	Output is correct

Subtask #3

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2652 KB	Output is correct
5	Correct	3 ms	3268 KB	Output is correct
6	Correct	5 ms	4096 KB	Output is correct
7	Correct	7 ms	4640 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2652 KB	Output is correct
2	Correct	1 ms	2652 KB	Output is correct
3	Correct	1 ms	2652 KB	Output is correct
4	Correct	1 ms	2652 KB	Output is correct
5	Correct	1 ms	2652 KB	Output is correct
6	Correct	1 ms	2652 KB	Output is correct
7	Correct	1 ms	2652 KB	Output is correct
8	Correct	1 ms	2652 KB	Output is correct
9	Correct	1 ms	2652 KB	Output is correct
10	Correct	1 ms	2652 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct

Subtask #5

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	3420 KB	Output is correct
2	Correct	9 ms	4400 KB	Output is correct
3	Correct	13 ms	5128 KB	Output is correct
4	Correct	16 ms	5980 KB	Output is correct
5	Correct	21 ms	6740 KB	Output is correct
6	Correct	24 ms	7516 KB	Output is correct
7	Correct	27 ms	12124 KB	Output is correct
8	Correct	4 ms	3160 KB	Output is correct
9	Correct	4 ms	3676 KB	Output is correct
10	Correct	7 ms	4444 KB	Output is correct
11	Correct	1 ms	2652 KB	Output is correct
12	Correct	1 ms	2652 KB	Output is correct
13	Correct	1 ms	2652 KB	Output is correct
14	Correct	1 ms	2652 KB	Output is correct
15	Correct	3 ms	3268 KB	Output is correct
16	Correct	5 ms	4096 KB	Output is correct
17	Correct	7 ms	4640 KB	Output is correct
18	Correct	1 ms	2652 KB	Output is correct
19	Correct	1 ms	2652 KB	Output is correct
20	Correct	1 ms	2652 KB	Output is correct
21	Correct	1 ms	2652 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2652 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2652 KB	Output is correct
29	Correct	29 ms	7544 KB	Output is correct
30	Correct	6 ms	4188 KB	Output is correct
31	Correct	25 ms	7092 KB	Output is correct
32	Correct	11 ms	4956 KB	Output is correct
33	Correct	21 ms	7372 KB	Output is correct
34	Correct	17 ms	5764 KB	Output is correct
35	Correct	18 ms	7004 KB	Output is correct
36	Correct	25 ms	6232 KB	Output is correct
37	Correct	21 ms	7224 KB	Output is correct
38	Correct	23 ms	6748 KB	Output is correct
39	Correct	19 ms	7004 KB	Output is correct