Submission #307695

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
307695	2020-09-29 06:11:54	CodePlatina	Stations (IOI20_stations)	C++14	100 / 100	974 ms	1268 KiB

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#include "stations.h"
#include <vector>
using namespace std;
vector<int> gph[1010];
int ord[1010];
int cnt = 0;
void dfs(int x, int p, bool flag)
{
    if(flag) ord[x] = ++cnt;
    for(auto y : gph[x]) if(y != p) dfs(y, x, !flag);
    if(!flag) ord[x] = ++cnt;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
  vector<int> labels(n);
  for(int i = 0; i < n; ++i) ord[i] = 0, vector<int>().swap(gph[i]);
  cnt = 0;
  for(int i = 0; i < n - 1; ++i)
    {
        gph[u[i]].push_back(v[i]);
        gph[v[i]].push_back(u[i]);
    }
    dfs(0, 0, false);
    for(int i = 0; i < n; ++i) labels[i] = ord[i];
    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