Submission #321964

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
321964	2020-11-13 14:52:49	katearima	Stations (IOI20_stations)	C++14	100 / 100	1185 ms	56216 KiB

stations

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#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
const int N=1005;
vector<vector<int>> a(N);
vector<int> ans(N);
int i,n,k,m,x,j,t;
void DFS(vector<vector<int>> a, int x,int y,int d){
  if(d%2==0) {ans[y]=t; t++;}
  for(int i=0; i<a[y].size(); i++){
    if(a[y][i]==x) continue;
    DFS(a,y,a[y][i],d+1);
  }
  if(d%2!=0) {ans[y]=t; t++;}
  
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
  vector<int> label(n);
  for(i=0; i<n; i++){
    a[i].clear();
    ans[i]=0;
  }
  for(i=0; i<n-1; i++){
    a[u[i]].push_back(v[i]);
    a[v[i]].push_back(u[i]);
  }
    t=0;
  DFS(a,-1,0,0);
  for(i=0; i<n; i++) label[i]=ans[i];
 
 
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Compilation message (stderr)

stations.cpp: In function 'void DFS(std::vector<std::vector<int> >, int, int, int)':
stations.cpp:11:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i=0; i<a[y].size(); i++){
      |               ~^~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:40:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |   for(int i=1; i<c.size()-1; i++){
      |                ~^~~~~~~~~~~
stations.cpp:47:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |   for(int i=1; i<c.size()-1; i++){
      |                ~^~~~~~~~~~~
stations.cpp:35:7: warning: unused variable 'parent' [-Wunused-variable]
   35 |  bool parent=true;
      |       ^~~~~~
stations.cpp:36:6: warning: unused variable 'ans' [-Wunused-variable]
   36 |  int ans;
      |      ^~~

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