Submission #108725

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
108725	2019-05-01 07:45:23	turbat	Race (IOI11_race)	C++14	100 / 100	1976 ms	38992 KiB

race

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#include <bits/stdc++.h>
#include "race.h"
using namespace std;
using vi = vector <int>;
using pii = pair <int, int>;
#define pb push_back
#define F first
#define S second
#define N 200005
int n, k, ans = N, sz[N], mx[N], centroid;
map <int, int> dist;
bool used[N];
vector <pii> edg[N];
void get_size(int u, int p){
  sz[u] = 1;
  mx[u] = 0;
  for (pii v : edg[u])
    if (v.F != p && !used[v.F]){
      get_size(v.F, u);
      mx[u] = max(mx[u], sz[v.F]);
      sz[u] += sz[v.F];
    }
  mx[u] = max(mx[u], n - sz[u]);
}
void get_centroid(int u, int p){
  for (pii v : edg[u])
    if (v.F != p && !used[v.F])
      get_centroid(v.F, u);
  if (mx[u] <= (n + 1) / 2) centroid = u;
}
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57