제출 #279654

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
279654		MKutayBozkurt	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	30 ms	680 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"
using namespace std;

vector<vector<int>> v;
vector<int> a;

void dfs(int i, int last = -1) {
	a.emplace_back(i);
	for (auto node : v[i]) {
		if (last == node) continue;
		dfs(node, i);
	}
}

int findEgg (int n, vector<pair<int, int>> bridges) {
	v = vector<vector<int>>(n + 10);
	for (auto node : bridges) {
		v[node.first].emplace_back(node.second);
		v[node.second].emplace_back(node.first);
	}
	dfs(1);
	int l = 0, r = n - 1;
	while (l < r) {
		int m = (l + r) / 2;
		if (query(vector<int>(a.begin(), a.begin() + m + 1))) r = m;
		else l = m + 1;
	}
	return a[l];
}

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