제출 #1141473

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1141473		Zheing	Easter Eggs (info1cup17_eastereggs)	C++20	100 / 100	7 ms	768 KiB

eastereggs

#include <bits/stdc++.h>
#include "grader.h"

using namespace std;

vector<int> tour, vis(550);
vector<vector<int>> graph;

void euler(int node) {
    vis[node] = true;
    tour.push_back(node);
    for (auto e: graph[node]) {
        if (!vis[e]) {
            euler(e);
        }
    }
}

int findEgg(int N, vector<pair<int, int>> bridges) {
    graph.resize(N + 1); 
    for (auto e : bridges) {
        graph[e.first].push_back(e.second);
        graph[e.second].push_back(e.first);
    }
    euler(1);
    int l = 0, r = N - 1;
    while (l < r) { 
        int m = (l + r + 1) / 2;
        if (query(vector<int>(tour.begin(), tour.begin() + m))) {
            r = m - 1;
        } else {
            l = m;
        }
    }
    return tour[r]; 
}

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