답안 #530931

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
530931	2022-02-27T06:51:35 Z	ivls	Cijanobakterije (COCI21_cijanobakterije)	C++14	70 / 70	38 ms	10560 KB

Main

#include <bits/stdc++.h>

using namespace std;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

using ll = long long;

const int inf = 2e9;

int n, m, mx, nm;
vector<int> g[100100];
bool used[100100];

void dfs(int v, int p, int de)
{
    used[v] = 1;
    if (de >= mx) { mx = de; nm = v; }
    for (auto u : g[v])
        if (u != p) dfs(u, v, de + 1);
}

int diam(int v)
{
    mx = 0;
    dfs(v, -1, 0);
    mx = 0;
    dfs(nm, -1, 0);
    return mx + 1;
}

int main()
{
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for (int i = 1; i <= m; i++)
    {
        int u, v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    int ans = 0;
    for (int i = 1; i <= n; i++)
        if (!used[i]) ans += diam(i);
    cout << ans << '\n';
}

Subtask #1

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	3148 KB	Output is correct
2	Correct	12 ms	3664 KB	Output is correct
3	Correct	17 ms	4304 KB	Output is correct
4	Correct	26 ms	4820 KB	Output is correct
5	Correct	32 ms	5524 KB	Output is correct
6	Correct	38 ms	5984 KB	Output is correct

Subtask #2

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	28 ms	10560 KB	Output is correct
2	Correct	4 ms	3020 KB	Output is correct
3	Correct	6 ms	3404 KB	Output is correct
4	Correct	8 ms	3892 KB	Output is correct

Subtask #3

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2636 KB	Output is correct
2	Correct	2 ms	2572 KB	Output is correct
3	Correct	1 ms	2636 KB	Output is correct
4	Correct	1 ms	2636 KB	Output is correct
5	Correct	4 ms	3148 KB	Output is correct
6	Correct	7 ms	3660 KB	Output is correct
7	Correct	10 ms	4192 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2636 KB	Output is correct
2	Correct	2 ms	2636 KB	Output is correct
3	Correct	1 ms	2636 KB	Output is correct
4	Correct	2 ms	2636 KB	Output is correct
5	Correct	2 ms	2636 KB	Output is correct
6	Correct	2 ms	2636 KB	Output is correct
7	Correct	1 ms	2632 KB	Output is correct
8	Correct	2 ms	2636 KB	Output is correct
9	Correct	3 ms	2636 KB	Output is correct
10	Correct	2 ms	2636 KB	Output is correct
11	Correct	1 ms	2636 KB	Output is correct

Subtask #5

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	3148 KB	Output is correct
2	Correct	12 ms	3664 KB	Output is correct
3	Correct	17 ms	4304 KB	Output is correct
4	Correct	26 ms	4820 KB	Output is correct
5	Correct	32 ms	5524 KB	Output is correct
6	Correct	38 ms	5984 KB	Output is correct
7	Correct	28 ms	10560 KB	Output is correct
8	Correct	4 ms	3020 KB	Output is correct
9	Correct	6 ms	3404 KB	Output is correct
10	Correct	8 ms	3892 KB	Output is correct
11	Correct	1 ms	2636 KB	Output is correct
12	Correct	2 ms	2572 KB	Output is correct
13	Correct	1 ms	2636 KB	Output is correct
14	Correct	1 ms	2636 KB	Output is correct
15	Correct	4 ms	3148 KB	Output is correct
16	Correct	7 ms	3660 KB	Output is correct
17	Correct	10 ms	4192 KB	Output is correct
18	Correct	2 ms	2636 KB	Output is correct
19	Correct	2 ms	2636 KB	Output is correct
20	Correct	1 ms	2636 KB	Output is correct
21	Correct	2 ms	2636 KB	Output is correct
22	Correct	2 ms	2636 KB	Output is correct
23	Correct	2 ms	2636 KB	Output is correct
24	Correct	1 ms	2632 KB	Output is correct
25	Correct	2 ms	2636 KB	Output is correct
26	Correct	3 ms	2636 KB	Output is correct
27	Correct	2 ms	2636 KB	Output is correct
28	Correct	1 ms	2636 KB	Output is correct
29	Correct	38 ms	5976 KB	Output is correct
30	Correct	8 ms	3532 KB	Output is correct
31	Correct	22 ms	5836 KB	Output is correct
32	Correct	13 ms	4184 KB	Output is correct
33	Correct	28 ms	5924 KB	Output is correct
34	Correct	18 ms	4648 KB	Output is correct
35	Correct	28 ms	5800 KB	Output is correct
36	Correct	25 ms	5084 KB	Output is correct
37	Correct	29 ms	5872 KB	Output is correct
38	Correct	32 ms	5452 KB	Output is correct
39	Correct	26 ms	5836 KB	Output is correct