제출 #472501

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
472501		yasseenkamel	Political Development (BOI17_politicaldevelopment)	C++14	4 / 100	292 ms	640 KiB

politicaldevelopment

#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize("-Ofast")
#include <bits/stdc++.h>

using namespace std;

typedef int in;
#define int long long
#define s second
#define f first
const long double EPS=1e-9;
const int MOD=1e9+7;
const int N=1e6;

int n,m;
vector<int> adj[5005];
bool vis[5005];
int ans = 1;

void dfs(int node,int d){
	if(vis[node]){
		if(d == min(m,(int)3)){
			ans = max(ans,d);
		}
		else if(d == 2){
			ans = max(ans,d);
		}
		return;
	}
	if(d >= 3){
		return;
	}
	//cout << node << " " << d << endl;
	vis[node] = 1;
	for(int i = 0 ; i < adj[node].size() ; i ++){
		dfs(adj[node][i],d + 1);
	}
}

in main(){
	cin >> n >> m;
	if(m == 1){
		cout << "1\n";
		return 0;
	}
	for(int i = 0 ; i < n ; i ++){
		int x;
		cin >> x;
		while(x --){
			int y;
			cin >> y;
			adj[i].push_back(y);
		}
	}
	for(int i = 0 ; i < n ; i ++){
		memset(vis,0,sizeof vis);
		dfs(i,0);
	}
	cout << ans << endl;
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

politicaldevelopment.cpp: In function 'void dfs(long long int, long long int)':
politicaldevelopment.cpp:36:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for(int i = 0 ; i < adj[node].size() ; i ++){
      |                  ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23