제출 #602038

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
602038	2022-07-22 14:00:56	Soumya1	Capital City (JOI20_capital_city)	C++17	11 / 100	3079 ms	42960 KiB

capital_city

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#include <bits/stdc++.h>
#ifdef __LOCAL__
  #include <debug_local.h>
#endif
using namespace std;
const int mxN = 2e5 + 5;
vector<int> ad[mxN], l[mxN];
int city[mxN];
int ans = mxN;
int sz[mxN], par[mxN];
bool deleted[mxN], visc[mxN];
vector<int> vec;
void get_size(int u, int p = -1) {
  vec.push_back(u);
  visc[city[u]] = false;
  sz[u] = 1;
  for (int v : ad[u]) {
    if (v == p || deleted[v]) continue;
    get_size(v, u);
    par[v] = u;
    sz[u] += sz[v];
  }
}
int get_centroid(int u, int p, int n) {
  for (int v : ad[u]) {
    if (v == p || deleted[v]) continue;
    if (sz[v] > n / 2) return get_centroid(v, u, n); 
  }
  return u;
}
 
 
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