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Submission #529018

# Submission time Handle Problem Language Result Execution time Memory
529018 2022-02-21T23:21:19 Z penguinhacker Cijanobakterije (COCI21_cijanobakterije) C++14
70 / 70
 37 ms 13232 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=1e5;
int n, m;
vector<int> adj[mxN];
bool vis[mxN];

ar<int, 2> dfs(int u) {
	vis[u]=1;
	ar<int, 2> d={};
	int diam=0;
	for (int v : adj[u])
		if (!vis[v]) {
			ar<int, 2> x=dfs(v);
			diam=max(diam, x[0]);
			if (x[1]+1>d[0]) {
				swap(d[0], d[1]);
				d[0]=x[1]+1;
			} else if (x[1]+1>d[1])
				d[1]=x[1]+1;
		}
	diam=max(diam, d[0]+d[1]);
	return {diam, d[0]};
}

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	for (int i=0; i<m; ++i) {
		int u, v;
		cin >> u >> v, --u, --v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	int ans=0;
	for (int i=0; i<n; ++i)
		if (!vis[i])
			ans+=dfs(i)[0]+1;
	cout << ans;
	return 0;
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 3284 KB Output is correct
2 Correct 11 ms 4036 KB Output is correct
3 Correct 17 ms 4836 KB Output is correct
4 Correct 20 ms 5580 KB Output is correct
5 Correct 27 ms 6328 KB Output is correct
6 Correct 35 ms 7112 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 13232 KB Output is correct
2 Correct 3 ms 3148 KB Output is correct
3 Correct 5 ms 3676 KB Output is correct
4 Correct 7 ms 4172 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2764 KB Output is correct
3 Correct 2 ms 2656 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 4 ms 3276 KB Output is correct
6 Correct 11 ms 3916 KB Output is correct
7 Correct 9 ms 4460 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2668 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2672 KB Output is correct
5 Correct 1 ms 2636 KB Output is correct
6 Correct 2 ms 2668 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2672 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 3 ms 2676 KB Output is correct
11 Correct 2 ms 2672 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 3284 KB Output is correct
2 Correct 11 ms 4036 KB Output is correct
3 Correct 17 ms 4836 KB Output is correct
4 Correct 20 ms 5580 KB Output is correct
5 Correct 27 ms 6328 KB Output is correct
6 Correct 35 ms 7112 KB Output is correct
7 Correct 27 ms 13232 KB Output is correct
8 Correct 3 ms 3148 KB Output is correct
9 Correct 5 ms 3676 KB Output is correct
10 Correct 7 ms 4172 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2764 KB Output is correct
13 Correct 2 ms 2656 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 4 ms 3276 KB Output is correct
16 Correct 11 ms 3916 KB Output is correct
17 Correct 9 ms 4460 KB Output is correct
18 Correct 3 ms 2668 KB Output is correct
19 Correct 1 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2672 KB Output is correct
22 Correct 1 ms 2636 KB Output is correct
23 Correct 2 ms 2668 KB Output is correct
24 Correct 2 ms 2636 KB Output is correct
25 Correct 2 ms 2672 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 3 ms 2676 KB Output is correct
28 Correct 2 ms 2672 KB Output is correct
29 Correct 37 ms 7024 KB Output is correct
30 Correct 8 ms 3828 KB Output is correct
31 Correct 23 ms 6520 KB Output is correct
32 Correct 15 ms 4560 KB Output is correct
33 Correct 30 ms 6900 KB Output is correct
34 Correct 25 ms 5304 KB Output is correct
35 Correct 23 ms 6732 KB Output is correct
36 Correct 24 ms 5836 KB Output is correct
37 Correct 29 ms 6896 KB Output is correct
38 Correct 33 ms 6328 KB Output is correct
39 Correct 37 ms 6724 KB Output is correct