제출 #342585

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
342585		ogibogi2004	Easter Eggs (info1cup17_eastereggs)	C++14	0 / 100	408 ms	131076 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"

using namespace std;
const int MAXN=600;
vector<int>g[MAXN];
vector<int>order;
void dfs(int u,int p)
{
	order.push_back(u);
	for(auto v:g[u])
	{
		if(v==p)continue;
		dfs(v,u);
	}
}
int findEgg (int N, vector < pair < int, int > > bridges)
{
	for(int i=0;i<bridges.size();i++)
	{
		g[bridges[i].first].push_back(bridges[i].second);
		g[bridges[i].second].push_back(bridges[i].first);
	}
	dfs(1,0);
	int low=0,high=N-1,mid,ans;
	while(low<=high)
	{
		mid=(low+high)/2;
		vector<int>q;
		for(int i=0;i<=mid;i++)q.push_back(order[i]);
		if(query(q))
		{
			ans=mid;
			high=mid-1;
		}
		else low=mid+1;
	}
	return order[ans];
    if (query ({1})) return 1;
    return N;
}

컴파일 시 표준 에러 (stderr) 메시지

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:19:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for(int i=0;i<bridges.size();i++)
      |              ~^~~~~~~~~~~~~~~
eastereggs.cpp:38:18: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   38 |  return order[ans];
      |                  ^

• Subtask 1: 0 / 40
• Subtask 2: 0 / 40
• Subtask 3: 0 / 20