Submission #743600

#	Time	Username	Problem	Language	Result	Execution time	Memory
743600		AndrijaM	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	16 ms	372 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
 
using namespace std;
 
vector<int>g[513];
vector<int>a;
 
void dfs(int node,int par)
{
    a.push_back(node);
    for(auto idx:g[node])
    {
        if(idx!=par)
        dfs(idx,node);
    }
}
 
int findEgg (int n, vector < pair < int, int > > b)
{
    for (int i = 1; i <= n; i++) g[i].clear();
	a.clear();
    for(auto idx:b)
    {
        g[idx.first].push_back(idx.second);
        g[idx.second].push_back(idx.first);
    }
    dfs(1,-1);
    int l=1;
    int r=n;
    while(l<r)
    {
        int mid=l+(r-l)/2;
        if(query(vector<int>(a.begin(),a.begin()+mid)))r=mid;
        else
        {
            l=mid+1;
        }
    }
    return a[l-1];
}

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