제출 #1145900

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1145900		txni128	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	0 ms	496 KiB

eastereggs

#include "grader.h"
#include <iostream>
#include <vector>
using namespace std;
int used[1024];
vector <int> v[1024];
vector <int> ans;
void dfs(int beg)
{
    used[beg]=1;
    ans.push_back(beg);
    for(auto c:v[beg])
    {
        if(!used[c])
        {
            dfs(c);
        }
    }
    return;
}
int findEgg(int N, vector < pair < int, int > > bridges)
{
    fill(used,used+1000,0);
    ans.clear();
    for(int i=1;i<=1010;i++)
    {
        v[i].clear();
    }
    for(auto c:bridges)
    {
        v[c.first].push_back(c.second);
        v[c.second].push_back(c.first);
    }
    dfs(1);
    int l=1;
    int r=N;
    int mid;
    bool la;
    while(l<=r)
    {
        mid=(l+r)/2;
        vector <int>k;
        for(int i=mid;i<=r;i++)
        {
            k.push_back(ans[i]);
        }
        la=query(k);
        if(la)
        {
            l=mid+1;
        }
        else r=mid-1;
    }
    return l;
}

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