Submission #306508

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
306508	2020-09-25 18:17:28	smax	Stations (IOI20_stations)	C++17	100 / 100	1022 ms	1132 KiB

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#include "stations.h"
#include <vector>
using namespace std;
int ti;
vector<int> adj[1005];
void dfs(int u, int p, int d, vector<int> &labels) {
    if (d % 2 == 0)
        labels[u] = ti++;
    for (int v : adj[u])
        if (v != p)
            dfs(v, u, d + 1, labels);
    if (d % 2 == 1)
        labels[u] = ti++;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  std::vector<int> labels(n);
  ti = 0;
  for (int i=0; i<n; i++)
        adj[i].clear();
    for (int i=0; i<n-1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    dfs(0, -1, 0, labels);
  return labels;
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61