Submission #314301

#	Time	Username	Problem	Language	Result	Execution time	Memory
314301		DanerZein	Stations (IOI20_stations)	C++14	Compilation error	0 ms	0 KiB

stations

#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
#define MAX 1000000000
using namespace std;
typedef vector<int> vi;
typedef pair<int,int> ii;
vector<int> labels;
int in[1010],out[1010];
int it=0;
void dfs(int u){
  it++;
  in[u]=it;
  for(auto &v:G[u]){
    if(!in[u]){
      dfs(v);
    }
  }
  it++;
  out[u]=it;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  labels.assign(n,-1);
  G.clear();
  G.resize(n+1);
  int t=u.size();
  for(int i=0;i<t;i++){
    int x=u[i],y=v[i];
    G[x].push_back(y);
    G[y].push_back(x);
  }
  for(int i=0;i<n;i++){
    int la=in[i]*1000;
    la+=out[i];
    labels[i]=la;
  }
  return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
  int ro=-1,rp=-1;
  int si,ti,so,to;
  si=s/1000; so=s%1000;
  ti=t/1000; to=s%1000;
  bool sub=0;
  if(si<ti && so>to){
    int ia,oa;
    for(int i=0;i<c.size();i++){
      ia=c[i]/1000; oa=c[i]%1000;
      if(ia<ti && oa>to){ // a que subarbol pertenece t
	rp=c[i];
	break;
      } 
    }
    return rp;
  }
  else{
    int ia,oa;
    for(int i=0;i<c.size();i++){
      ia=c[i]/1000; oa=c[i]%1000; 
      if(!(ia<ti && oa>to)){ // si no es mi hijo es mi padre
	ro=c[i];
	break;
      }
    }
    return ro;
  }
}

Compilation message (stderr)

stations.cpp: In function 'void dfs(int)':
stations.cpp:14:15: error: 'G' was not declared in this scope
   14 |   for(auto &v:G[u]){
      |               ^
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:24:3: error: 'G' was not declared in this scope
   24 |   G.clear();
      |   ^
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:48:18: 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<c.size();i++){
      |                 ~^~~~~~~~~
stations.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for(int i=0;i<c.size();i++){
      |                 ~^~~~~~~~~
stations.cpp:45:8: warning: unused variable 'sub' [-Wunused-variable]
   45 |   bool sub=0;
      |        ^~~