Submission #1145956

#	Time	Username	Problem	Language	Result	Execution time	Memory
1145956		tisho	Easter Eggs (info1cup17_eastereggs)	C++20	100 / 100	8 ms	504 KiB

eastereggs

#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <set>
#include "grader.h"
#define endl '\n'
#define ll long long
vector<int>v[600];
vector<int>b;
bool used[600];
void dfs(int a)
{
    used[a]=true;
    b.push_back(a);
    for(auto i:v[a])
    {
        if(!used[i])
        {
            dfs(i);
        }
    }
}
int findEgg(int n,vector<pair<int,int>>bridges)
{
    memset(used,false,sizeof(used));
    for(int i=1;i<=n;i++)
    {
        v[i].clear();
    }
    for(int i=0;i<bridges.size();i++)
    {
        int x,y;
        x=bridges[i].first;
        y=bridges[i].second;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    b.clear();
    dfs(1);
    int l=0,r=b.size()-1,m,isThere;
    vector<int>cur;
    while(l<r)
    {
        m=l+(r-l)/2;
        cur.clear();
        //cur.resize(m+5);
        for(int i=0;i<=m;i++)cur.push_back(b[i]);
        isThere=query(cur);
        if(isThere==1)
        {
            r=m;
        }
        else
        {
            l=m+1;
        }
    }
    return b[l];
}

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