제출 #243005

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
243005		minhcool	Easter Eggs (info1cup17_eastereggs)	C++17	100 / 100	26 ms	2960 KiB

eastereggs

#include<bits/stdc++.h>
#include "grader.h"
using namespace std;
 
#define fi first
#define se second
#define pb push_back
 
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
vector<int> euler;
vector<int> Adjlist[100005];
 
void dfs(int u, int p){
	euler.pb(u);
	for(int i = 0; i < Adjlist[u].size(); i++){
		int v = Adjlist[u][i];
		if(v == p) continue;
		dfs(v, u);
	}
}
 
int findEgg(int N, vector<ii> bridges){
    for(int i = 1; i <= N; i++) Adjlist[i].clear();
	for(int i = 0; i < bridges.size(); i++){
		Adjlist[bridges[i].fi].pb(bridges[i].se);
		Adjlist[bridges[i].se].pb(bridges[i].fi);
	}
	dfs(1, 1);
	int l = 0, r = N - 1;
	while(l != r){
		int mid = (l + r) >> 1;
		vector<int> nodes;
		nodes.clear();
		for(int i = 0; i <= mid; i++) nodes.pb(euler[i]);
		if(query(nodes)) r = mid;
		else l = mid + 1;
	}
	return euler[l];
}

컴파일 시 표준 에러 (stderr) 메시지

eastereggs.cpp: In function 'void dfs(int, int)':
eastereggs.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < Adjlist[u].size(); i++){
                 ~~^~~~~~~~~~~~~~~~~~~
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:27:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < bridges.size(); i++){
                 ~~^~~~~~~~~~~~~~~~

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