Submission #311960

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
311960	2020-10-12 04:32:03	tzxydby	Stations (IOI20_stations)	C++14	100 / 100	991 ms	1328 KiB

stations

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#include"stations.h"
#include<bits/stdc++.h>
using namespace std;
const int N=1005;
vector<int>e[N],a;
int c;
void dfs(int u,int f,int d)
{
  if(d)
    a[u]=c++;
  for(auto v:e[u])
    if(v!=f)
      dfs(v,u,d^1);
  if(!d)
    a[u]=c++;
}
vector<int> label(int n,int k,vector<int>u,vector<int>v)
{
  a.assign(n,0);
  for(int i=0;i<n;i++)
    e[i].clear();
  c=0;
  for(int i=0;i<n-1;i++)
  {
    e[u[i]].push_back(v[i]);
    e[v[i]].push_back(u[i]);
  }
  dfs(0,0,0);
  a[0]=1000;
  return a;
 
 
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Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:38:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |   for(int i=0;i<c.size()-1;i++)
      |               ~^~~~~~~~~~~
stations.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for(int i=1;i<c.size()-1;i++)
      |               ~^~~~~~~~~~~
stations.cpp:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |   for(int i=1;i<c.size()-1;i++)
      |               ~^~~~~~~~~~~

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