제출 #321916

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
321916		demetre	Stations (IOI20_stations)	C++14	0 / 100	1318 ms	2097156 KiB

stations

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

using namespace std;

int fix[10001],timer;
vector <int> v[10001];
vector <int> labels;

void dfs(int u,int d){
	fix[u]=1;
	if(d%2==0){
		timer++;
		labels[u]=timer;
	}
	for(int i = 0; i < v[u].size(); i++){
		if(fix[v[u][i]]!=0)
			dfs(v[u][i],d+1);
	}
	if(d%2!=0){
		timer++;
		labels[u]=timer;
	}
}
 
vector<int> label(int n, int k, vector<int> u, vector<int> g) {
	labels.clear();
	labels.resize(n);
	for(int i = 0; i < n; i++){
		v[i].clear();
		fix[i]=0;
	}
	for (int i = 0; i < u.size(); i++) {
		v[u[i]].push_back(g[i]);
		v[g[i]].push_back(u[i]);
	} 
	timer=0;
	for(int i = 0; i < n; i++){
		if(fix[i]==0)
			dfs(i,0);
	}
	return labels;
}
 
int find_next_station(int s, int t, vector<int> k) {
	if(s < k[0]) {
	    if(t>s){	
			for(int i=0;i<k.size()-1;i++){
				if(t<=k[i])
					 return k[i];
			}
		}
		return k[k.size()-1];			
	}
	else {
		if(t<s){
			for(int i=k.size()-1;i>=1;i--)
			if(t>=k[i]) 
				return k[i];
		}
		return k[0];
	}
}

컴파일 시 표준 에러 (stderr) 메시지

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:16:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  for(int i = 0; i < v[u].size(); i++){
      |                 ~~^~~~~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for (int i = 0; i < u.size(); i++) {
      |                  ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |    for(int i=0;i<k.size()-1;i++){
      |                ~^~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61