Submission #652908

#	Time	Username	Problem	Language	Result	Execution time	Memory
652908		coding_snorlax	Stations (IOI20_stations)	C++14	Compilation error	0 ms	0 KiB

stations

//#include "stations.h"
//[1,2,3,4,5,6,7,8]
//[0,1,1,2,2,3,3,4]
#include<bits/stdc++.h>
using namespace std;
vector<int> G[1005];
int vis[1005]={0};
int tree_order[1005];
int now_order=0;
void dfs(int node){
    vis[node]=1;
    tree_order[node]=now_order;
    now_order++;
    for(int i:G[node]){
        if(!vis[i]){
            dfs(i);
        }
    }
    return;
}
void get_graph(vector<int> G1,vector<int> G2){
    for(int i=0;i<1005;i++){
 		G[i].clear();
    }
    for(int i=0;i<(int)G1.size();i++){
        G[G1[i]].push_back(G2[i]);
        G[G2[i]].push_back(G1[i]);
    }
    int start;
    for(int i=0;i<(int)G1.size()+1;i++){
        if((int)G[i].size()==1) start=i;
    }
    for(int i=0;i<1005;i++){
        vis[i]=0;
        now_order=0;
    }
    dfs(start);
    return;
}
vector<int> label(int n,int k,vector<int> u,vector<int> v){
    for(int i=0;i<1003;i++){
        G[i+1].push_back(i/2);
        G[i/2].push_back(i+1);
    }
    vector<int> Answer;
    for(int i=0;i<n;i++){
        Answer.push_back(i);
    }
    return Answer;
}
//s/1000 is node, s%1000 is connect place
int find_next_station(int s,int t,vector<int> c){
    if ((int)c.size()==1) return c[0];
    else{
        if(s<t) return c[1];
        else return c[0];
    }
}
int main(){
    vector<int> List1={0,1,2,3,4};
    vector<int> List2={2,0,3,4,5};
    label(6,10,List1,List2);
    for(int i=0;i<6;i++){
        cout<<tree_order[i]<<" ";
    }
    vector<int> q={0,2};
    cout<<find_next_station(1,3,q);
    //find_next_startion()
}

Compilation message (stderr)

stations.cpp: In function 'void get_graph(std::vector<int>, std::vector<int>)':
stations.cpp:37:8: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |     dfs(start);
      |     ~~~^~~~~~~
/usr/bin/ld: /tmp/ccvCFk6j.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLw4tQj.o:stations.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status