Submission #308345

#	Time	Username	Problem	Language	Result	Execution time	Memory
308345		chubyxdxd	Stations (IOI20_stations)	C++17	0 / 100	1202 ms	1008 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
#include <vector>
using namespace std;
vector<vector<int>> G;
vector<int> gg;
vector<int> labels;
int id=0;
void dfs(int node,int pad){
  labels[node]=id;
  id++;
  for(auto i:G[node]){
    if(i==pad)continue;
    dfs(i,node);
  }
}
vector<int> label(int n, int k,vector<int> u,vector<int> v) {
  G.clear();
  G.assign(n+10,vector<int>());
  for(int i=0;i<u.size();i++){
    G[u[i]].push_back(v[i]);
    G[v[i]].push_back(u[i]);
  }
  int piv=0;
  labels.resize(n);
  for(int i=0;i<n;i++){
    if(G[i].size()==1){
      dfs(piv,-1);
      break;
    }
  }
  return labels;
}
 
int find_next_station(int s, int t,vector<int> c) {
  if(int(c.size())==1)return c[0];
  if(t<s)return min(c[0],c[1]);
  else return max(c[0],c[1]);
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:20:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   for(int i=0;i<u.size();i++){
      |               ~^~~~~~~~~

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