Submission #312940

#	Time	Username	Problem	Language	Result	Execution time	Memory
312940		DanerZein	Stations (IOI20_stations)	C++14	5 / 100	1057 ms	876 KiB

stations

#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  vector<int> labels;
  labels.assign(n,-1);
  vector<vi>G;
  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);
  }
  int no=0,id=-1;
  for(int i=0;i<n;i++){
    if(G[i].size()==1){
      id=i;
      break;
    }
  }
  queue<int> q;
  q.push(id);
  while(!q.empty()){
    int x=q.front();
    q.pop();
    labels[x]=no;
    no++;
    for(auto &v:G[x]){
      if(labels[v]==-1){
	q.push(v);
      }
    }
  }
  return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
  if(s>t)
    return s-1;
  return s+1;
}

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