제출 #1145932

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1145932		boropoto	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	0 ms	508 KiB

eastereggs

#include<bits/stdc++.h>
#include"grader.h"
using namespace std;
vector<int> v[1000],tops;
int used[1000];
void DFS(int i)
{
    tops.push_back(i);
    used[i]=1;
    int sz=v[i].size(),nb;
    for(int j=0;j<sz;j++)
    {
        nb=v[i][j];
        if(used[nb]==0)
        {
            DFS(nb);
        }
    }
}
int findEgg(int n, vector < pair < int, int > > bridges)
{
    for(int i=0;i<n;i++)
    {
        v[bridges[i].first].push_back(bridges[i].second);
        v[bridges[i].second].push_back(bridges[i].first);
    }
    DFS(1);
    int l=0,r=n,m;
    while(r-l>1)
    {
        m=(l+r)/2;
        vector<int> v1;
        for(int i=l;i<=m;i++)
        {
            v1.push_back(tops[i]);
        }
        if(query(v1)==1)
        {
            r=m;
        }
        else
        {
            l=m+1;
        }
    }
    return r;
}

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