제출 #61602

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
61602		IOrtroiii	Easter Eggs (info1cup17_eastereggs)	C++14	컴파일 에러	0 ms	0 KiB

eastereggs

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

const int N = 1e5 + 5;

int n;
vector<int> G[N], ask;
int arr[N], tot = 0;

void dfs(int u,int p) {
	arr[++tot] = u;
	for (int v : G[u]) if (v != p) {
		dfs(v, u);
	} 
}

int findEgg(int n,vector<pair<int,int>> bridges) {
	for (int i = 1; i <= n; ++i) G[i].clear();
	
	for (auto ed : bridges) {
		int u = ed.first, ed.second;
		G[u].push_back(v), G[v].push_back(u);
	}
	
	dfs(1, 1);
	int l = 1, r = n;
	while (l < r) {
		int mid = l + r >> 1;
		ask.clear();
		for (int i = 1; i <= mid; ++i) ask.push_back(arr[i]);
		if (query(ask)) r = mid; else l = mid + 1;
	}
	return arr[l];
}

컴파일 시 표준 에러 (stderr) 메시지

eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:22:23: error: expected initializer before '.' token
   int u = ed.first, ed.second;
                       ^
eastereggs.cpp:23:18: error: 'v' was not declared in this scope
   G[u].push_back(v), G[v].push_back(u);
                  ^
eastereggs.cpp:29:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid = l + r >> 1;
             ~~^~~