#include<bits/stdc++.h>
#include "train.h"
using namespace std;
#define pb push_back
int vis[5005]={0};
int rev_answer[5005]={0};
vector<int> answer;
vector<int> G[5005];
vector<int> rev_G[5005];
int charge[5005]={0};
int flag=-1;
void dfs(int node){
//cout<<"dfs node: "<<node;
vis[node]=1;
for(int i:G[node]){
if(!vis[i] && !charge[i]) dfs(i);
if(vis[i]) flag=i;
}
}
void rev_dfs(int node){
//cout<<"rev_dfs node: "<<node;
vis[node]=1;
for(int i:rev_G[node]){
if(!vis[i]){
rev_answer[i]=1;
rev_dfs(i);
}
}
}
vector<int> who_wins(vector<int> a,vector<int> r,vector<int> u,vector<int> v){
for(int i=0;i<(int)r.size();i++){
charge[i]=r[i];
}
for(int i=0;i<(int)u.size();i++){
G[u[i]].push_back(v[i]);
rev_G[v[i]].push_back(u[i]);
}
for(int i=0;i<(int)a.size();i++){
flag=-1;
for(int j=0;j<(int)a.size();j++){
vis[j]=0;
}
if(!charge[i]) dfs(i);
for(int j=0;j<(int)a.size();j++){
vis[j]=0;
}
if(flag!=-1) rev_dfs(flag);
}
for(int i=0;i<(int)a.size();i++){
flag=-1;
for(int j=0;j<(int)a.size();j++){
vis[j]=0;
}
if(!charge[i]) dfs(i);
for(int j=0;j<(int)a.size();j++){
vis[j]=0;
}
if(flag!=-1) rev_dfs(flag);
}
for(int i=0;i<(int)a.size();i++){
if(!rev_answer[i]) answer.pb(1);
else answer.pb(0);
}
return answer;
}
int main(){
vector<int> a = {0,0,0,0,0,0};
vector<int> r = {0,0,0,0,0,1};
vector<int> u = {0,0,1,3,4,2};
vector<int> v = {1,2,3,4,1,5};
auto b = who_wins(a, r, u, v);
for(int i:b) cout<<i<<" ";
}
Compilation message
/usr/bin/ld: /tmp/ccklSAie.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccoi4n6d.o:train.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status
