제출 #1178303

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1178303		perchuts	Easter Eggs (info1cup17_eastereggs)	C++20	0 / 100	0 ms	456 KiB

eastereggs

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

int findEgg(int n, vector<pair<int, int>> edg) {
    vector<vector<int>> g(n+1);
    for (auto [x, y] : edg) g[x].push_back(y), g[y].push_back(x);
    int l = 1, r = n, ans = n;
    while (l <= r) {
        int md = l + (r-l+1)/2;
        vector<int> qq;
        int T = 1;
        auto dfs = [&] (auto&& self, int u, int p) -> void {
            if (T <= md) qq.push_back(u);
            T++;
            for (auto v : g[u]) {
                if (v == p) continue;
                self(self, v, u);
            }
        };
        if (query(qq)) ans = qq.back(), l = md+1;
        else r = md-1;
    }
    return ans; 
}

• Subtask 1: 0 / 40
• Subtask 2: 0 / 40
• Subtask 3: 0 / 20