제출 #1291474

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1291474		noobsolver24	Easter Eggs (info1cup17_eastereggs)	C++20	87 / 100	8 ms	508 KiB

eastereggs

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

const int MAX = 1e3 + 5, mod = 998244353;

vector<int> g[MAX];
vector<int> ord;

void dfs(int node, int p){
    ord.push_back(node);
    for (auto to : g[node]) {
        if (to == p) continue;
        dfs(to, node);
    }
}

int findEgg (int n, vector < pair < int, int > > bridges)
{
    ord.clear();
    for (int i = 1; i <= n; i++) g[i].clear();
    for (auto [x, y] : bridges) {
        g[x].push_back(y);
        g[y].push_back(x);
    }
    dfs(1, 1);
    int l = 0, r = n - 1, best;
    while (l <= r) {
        int mid = (l + r) >> 1;
        vector<int> v;
        for (int i = 0; i <= mid; i++) {
            v.push_back(ord[i]);
        }
        if (query(v)) {
            best = ord[mid];
            r = mid - 1;
        } else l = mid + 1;
    }
    return best;
}

• Subtask 1: 32 / 40
• Subtask 2: 40 / 40
• Subtask 3: 15 / 20