Submission #304942

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
304942	2020-09-22 09:00:18	Namnamseo	Stations (IOI20_stations)	C++17	100 / 100	1287 ms	1284 KiB

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#include <vector>
#include <algorithm>
using namespace std;
vector<int> edges[1010];
int n;
vector<int> dfs(int x, int p, int d)
{
  vector<int> cv;
  for(int y:edges[x]) if (y != p) {
    auto tmp = dfs(y, x, d+1);
    cv.insert(cv.end(), tmp.begin(), tmp.end());
  }
  if (d%2 == 0) cv.insert(cv.begin(), x);
  else cv.insert(cv.end(), x);
  return cv;
}
vector<int> label(int n_, int k, vector<int> u, vector<int> v)
{
  n = n_;
  for(int i=0; i<n; ++i) edges[i].clear();
  for(int i=0; i<n-1; ++i) {
    int a = u[i], b = v[i];
    edges[a].push_back(b);
    edges[b].push_back(a);
  }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61