제출 #666988

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
666988		Kenpar	Cijanobakterije (COCI21_cijanobakterije)	C++17	12 / 70	38 ms	10040 KiB

Main

#include "bits/stdc++.h"
using namespace std;

#define ll long long
#define endl '\n'

const ll MOD = 1e9+7;
const ll INF = 1e18;
const ll MAX = 1e5;

vector<vector<int>> edges(MAX);

vector<bool>  visited(MAX, false);

int getLengthChild(int cur){
	if(visited[cur]) return 0;

	visited[cur] = true;

	int ans = 0;

	for(int tar : edges[cur]){
		ans = max(ans, getLengthChild(tar));
	}

	return ans+1;
}

int getLength(int cur){
	visited[cur] = true;
	int a = 0,b = 0;

	for(int tar : edges[cur]){
		int cur = getLengthChild(tar);

		if(cur > a){
			b = a;
			a = cur;
		}else if(cur > b){
			b = cur;
		}
	}

	return a+b+1;
}

void solve(){	
	int n,m;
	cin>>n>>m;

	for(int i = 0; i < m; i++){
		int a,b; cin>>a>>b;

		a--,b--;
		edges[a].push_back(b);
		edges[b].push_back(a);
	}

	vector<int> ans;

	for(int i = 0; i < n; i++){
		if(!visited[i]) ans.push_back(getLength(i));
	}

	int sum = 0;

	for(int a : ans) sum+=a;

	cout<<sum;
}	 

int main()
{
    cin.tie(NULL);
    ios::sync_with_stdio(NULL);
    int t = 1;

    //cin>>t;
    int temp = t;
    while(t--){
        //cout<<"Case #"<<temp - t<<" > "<<endl;
        solve();

        cout<<endl;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:79:9: warning: unused variable 'temp' [-Wunused-variable]
   79 |     int temp = t;
      |         ^~~~

• Subtask 1: 0 / 15
• Subtask 2: 6 / 6
• Subtask 3: 6 / 6
• Subtask 4: 0 / 15
• Subtask 5: 0 / 28