제출 #583199

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
583199		rxlfd314	Easter Eggs (info1cup17_eastereggs)	C++17	0 / 100	1 ms	464 KiB

eastereggs

// https://oj.uz/problem/view/info1cup17_eastereggs
#include <bits/stdc++.h>
#include <grader.h>
using namespace std;
vector<int> adj[512], bruh;
void dfs(int f = 0, int pf = -1) {
        bruh.push_back(f);
        for (int nf : adj[f]) {
                if (nf != pf) {
                        dfs(nf, f);
                }
        }
}
int findEgg(int n, vector<pair<int, int>> bridges) {
        for (int i = 0; i < n; adj[i++].clear());
        for (pair<int, int> i : bridges) {
                adj[i.second - 1].push_back(i.first - 1);
                adj[i.first - 1].push_back(i.second - 1);
        }
        bruh.clear();
        dfs();
        int lo = 0, hi = n - 1;
        while (lo <= hi) {
                int mid = lo + hi >> 1;
                if (query(vector<int>(bruh.begin(), bruh.begin() + mid))) {
                        hi = mid - 1;
                } else {
                        lo = mid + 1;
                }
        }
        return bruh[hi + 1];
}

컴파일 시 표준 에러 (stderr) 메시지

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:24:30: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   24 |                 int mid = lo + hi >> 1;
      |                           ~~~^~~~

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