제출 #226026

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
226026		cfalas	악어의 지하 도시 (IOI11_crocodile)	C++14	0 / 100	5 ms	384 KiB

crocodile

#include<bits/stdc++.h>
using namespace std;
#include "crocodile.h"
#define F first
#define S second
#define ll long long
typedef pair<ll, ll> ii;
typedef vector<ii> vii;

int ans=0;
vector<vii> adj;
bool vis[1000000];
bool nice[1000000];
bool dfs(int s){
	//cout<<s<<" ";
	vis[s] = true;
	if(nice[s]) return true;
	//cout<<adj[s].size()<<endl;
	int ind=0;
	int cnt=0;
	for(auto x : adj[s]){
		//cout<<" "<<x.S<<" "<<vis[x.S]<<endl;
		if(!vis[x.S]) cnt++;
		if(cnt==2) break;
		ind++;
	}
	//cout<<ind<<endl;
	if(ind!=0 && ind<adj[s].size()){
		ans+=adj[s][ind].F;
		if(dfs(adj[s][ind].S)) return true;

	}
	return false;
}

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]) {
	adj.assign(n+1, vii());
	for(int i=0;i<m;i++){
		adj[r[i][0]].push_back(ii(l[i], r[i][1]));
		adj[r[i][1]].push_back(ii(l[i], r[i][0]));
	}
	for(int i=0;i<k;i++){
		nice[p[i]] = true;
	}
	for(int i=0;i<n;i++){
		sort(adj[i].begin(), adj[i].end());
	}
	dfs(0);
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

crocodile.cpp: In function 'bool dfs(int)':
crocodile.cpp:28:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(ind!=0 && ind<adj[s].size()){
               ~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11