Submission #306236

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
306236	2020-09-24 23:48:01	sofapuden	Stations (IOI20_stations)	C++14	100 / 100	1160 ms	1264 KiB

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#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int>> gri;
vector<int> ret;
int cn;
void dfs(int x, int p, int d){
  if(!(d&1))ret[x] = cn++;
  for(auto i : gri[x]){
    if(i == p)continue;
    dfs(i,x,d+1);
  }
  if(d&1)ret[x] = cn++; 
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
  cn = 0;
  gri.assign(n, vector<int>(0));
  ret.assign(n,-1);
  for(int i = 0; i < n-1; ++i){
    gri[u[i]].push_back(v[i]);
    gri[v[i]].push_back(u[i]);
  }
  dfs(0,0,0);
  return ret;
}
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61