Submission #439489

#	Time	Username	Problem	Language	Result	Execution time	Memory
439489		Yazan_Alattar	Easter Eggs (info1cup17_eastereggs)	C++14	100 / 100	25 ms	448 KiB

eastereggs

#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <vector>
#include <algorithm>


#include "grader.h"

using namespace std;

#define endl "\n"
#define F first
#define S second
#define pb push_back
typedef long long ll;
const int M = 550;
const int mod = 1e9+7;

vector <int> adj[M], ord;

void dfs(int node, int p)
{
    ord.pb(node);
    for(auto i : adj[node]){
        if(i == p) continue;
        dfs(i, node);
    }
    return;
}

int findEgg(int N, vector<pair<int, int>> bridges) {
	for (int i = 1; i <= N; i++) adj[i].clear();
	ord.clear();
	for (pair<int, int> i : bridges) {
		adj[i.first].push_back(i.second);
		adj[i.second].push_back(i.first);
	}
	dfs(1, 0);
	int l = 0, r = N - 1;
	while (l != r) {
		int mid = (l + r + 1) / 2;
		if (query(vector<int>(ord.begin(), ord.begin() + mid))) r = mid - 1;
		else l = mid;
	}
	return ord[l];
}

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