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Submission #679394

# Submission time Handle Problem Language Result Execution time Memory
679394 2023-01-08T08:08:46 Z Warinchai Cijanobakterije (COCI21_cijanobakterije) C++14
70 / 70
 118 ms 23756 KB 
#include<bits/stdc++.h>
using namespace std;
vector<int>v[100005];
int p[100005];
int soch[100005][2];
bool vis[100005];
priority_queue<int>pq[100005];
vector<int>pr;
int mxl[100005];
int dfs(int nd,int par){
	for(int i=0;i<v[nd].size();i++){
		if(vis[v[nd][i]]==0){
			vis[v[nd][i]]=1;
			pq[nd].push(dfs(v[nd][i],par));
		}
	}
	if(!pq[nd].empty()){
		soch[nd][0]=pq[nd].top();
		pq[nd].pop();
	}
	if(!pq[nd].empty()){
		soch[nd][1]=pq[nd].top();
	}
	if(soch[nd][0]+soch[nd][1]+1>mxl[par]){
		mxl[par]=soch[nd][0]+soch[nd][1]+1;
	}
	return soch[nd][0]+1;
}
int fp(int a){
	if(p[a]==a){
		return a;
	}
	p[a]=fp(p[a]);
	return p[a];
}
void un(int a,int b){
	if(fp(a)==fp(b)){
		return;
	}
	p[fp(a)]=fp(b);
}
int main(){
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		p[i]=i;
	}
	for(int i=0;i<m;i++){
		int a,b;
		cin>>a>>b;
		v[a].push_back(b);
		v[b].push_back(a);
		un(a,b);
	}
	for(int i=1;i<=n;i++){
		if(fp(i)==i){
			pr.push_back(i);
		}
	}
	int ans=0;
	for(int i=0;i<pr.size();i++){
		int nd=pr[i];
		vis[nd]=1;
		dfs(nd,nd);
		ans+=mxl[nd];
	}
	cout<<ans;
}

Compilation message

Main.cpp: In function 'int dfs(int, int)':
Main.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0;i<v[nd].size();i++){
      |              ~^~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:61:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |  for(int i=0;i<pr.size();i++){
      |              ~^~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 6996 KB Output is correct
2 Correct 31 ms 8172 KB Output is correct
3 Correct 48 ms 9396 KB Output is correct
4 Correct 66 ms 10556 KB Output is correct
5 Correct 87 ms 11848 KB Output is correct
6 Correct 118 ms 13004 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 23756 KB Output is correct
2 Correct 8 ms 6868 KB Output is correct
3 Correct 15 ms 7800 KB Output is correct
4 Correct 22 ms 8956 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5716 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5804 KB Output is correct
4 Correct 3 ms 5796 KB Output is correct
5 Correct 10 ms 6672 KB Output is correct
6 Correct 17 ms 7508 KB Output is correct
7 Correct 24 ms 8576 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5844 KB Output is correct
2 Correct 3 ms 5716 KB Output is correct
3 Correct 3 ms 5716 KB Output is correct
4 Correct 3 ms 5844 KB Output is correct
5 Correct 3 ms 5796 KB Output is correct
6 Correct 4 ms 5844 KB Output is correct
7 Correct 3 ms 5844 KB Output is correct
8 Correct 3 ms 5844 KB Output is correct
9 Correct 3 ms 5844 KB Output is correct
10 Correct 4 ms 5844 KB Output is correct
11 Correct 4 ms 5844 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 6996 KB Output is correct
2 Correct 31 ms 8172 KB Output is correct
3 Correct 48 ms 9396 KB Output is correct
4 Correct 66 ms 10556 KB Output is correct
5 Correct 87 ms 11848 KB Output is correct
6 Correct 118 ms 13004 KB Output is correct
7 Correct 72 ms 23756 KB Output is correct
8 Correct 8 ms 6868 KB Output is correct
9 Correct 15 ms 7800 KB Output is correct
10 Correct 22 ms 8956 KB Output is correct
11 Correct 3 ms 5716 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5804 KB Output is correct
14 Correct 3 ms 5796 KB Output is correct
15 Correct 10 ms 6672 KB Output is correct
16 Correct 17 ms 7508 KB Output is correct
17 Correct 24 ms 8576 KB Output is correct
18 Correct 3 ms 5844 KB Output is correct
19 Correct 3 ms 5716 KB Output is correct
20 Correct 3 ms 5716 KB Output is correct
21 Correct 3 ms 5844 KB Output is correct
22 Correct 3 ms 5796 KB Output is correct
23 Correct 4 ms 5844 KB Output is correct
24 Correct 3 ms 5844 KB Output is correct
25 Correct 3 ms 5844 KB Output is correct
26 Correct 3 ms 5844 KB Output is correct
27 Correct 4 ms 5844 KB Output is correct
28 Correct 4 ms 5844 KB Output is correct
29 Correct 99 ms 13056 KB Output is correct
30 Correct 19 ms 9296 KB Output is correct
31 Correct 63 ms 12984 KB Output is correct
32 Correct 49 ms 10444 KB Output is correct
33 Correct 77 ms 13180 KB Output is correct
34 Correct 53 ms 11360 KB Output is correct
35 Correct 67 ms 13016 KB Output is correct
36 Correct 70 ms 12136 KB Output is correct
37 Correct 77 ms 13172 KB Output is correct
38 Correct 78 ms 12820 KB Output is correct
39 Correct 69 ms 13024 KB Output is correct