제출 #428640

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
428640		vanic	장난감 기차 (IOI17_train)	C++14	컴파일 에러	0 ms	0 KiB

train

#include "train.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>

using namespace std;

const int maxn=5005;

int n, m;
vector < int > ms[maxn];
int charge[maxn];
bool tko[maxn];
bool bio[maxn];
vector < int > sol;
vector < int > put;
int poc;

int dfs(int x){
	if(x==poc){
		return 1;
	}
	if(bio[x]){
		return sol[x];
	}
	bio[x]=1;
	put.push_back(x);
	for(int i=0; i<ms[x].size(); i++){
		sol[x]|=dfs(ms[x][i]);
	}
	put.pop_back();
	sad[x]=0;
	
}
vector < int > who_wins(vector < int > a, vector < int > r, vector < int > u, vector < int > v) {
	n=a.size();
	m=u.size();
	for(int i=0; i<n; i++){
		tko[i]=a[i];
		charge[i]=r[i];
	}
	for(int i=0; i<m; i++){
		ms[u[i]].push_back(v[i]);
	}
	sol.resize(n, 0);
	for(int i=0; i<n; i++){
		if(charge[i]){
			poc=i;
			dfs(i);
		}
	}
	bool p=1;
	while(p){
		p=0;
		for(int i=0; i<n; i++){
			if(sol[i]){
				continue;
			}
			for(int j=0; j<ms[i].size(); j++){
				if(sol[ms[i][j]]){
					sol[i]=1;
					p=1;
					break;
				}
			}
		}
	}
	return sol;
}

컴파일 시 표준 에러 (stderr) 메시지

train.cpp: In function 'int dfs(int)':
train.cpp:29:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i=0; i<ms[x].size(); i++){
      |               ~^~~~~~~~~~~~~
train.cpp:33:2: error: 'sad' was not declared in this scope; did you mean 'std'?
   33 |  sad[x]=0;
      |  ^~~
      |  std
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:60:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |    for(int j=0; j<ms[i].size(); j++){
      |                 ~^~~~~~~~~~~~~
train.cpp: In function 'int dfs(int)':
train.cpp:32:14: warning: control reaches end of non-void function [-Wreturn-type]
   32 |  put.pop_back();
      |  ~~~~~~~~~~~~^~