제출 #884989

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
884989	2023-12-08 18:51:59	MinaRagy06	Jail (JOI22_jail)	C++17	61 / 100	5059 ms	25436 KiB

jail

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 120'005;
vector<int> adj[N];
int st[N], en[N], h[N], anc[N][17], t;
void dfs(int i, int par, int d = 0) {
  anc[i][0] = par;
  for (int j = 1; j < 17; j++) {
    anc[i][j] = anc[anc[i][j - 1]][j - 1];
  }
  h[i] = d;
  st[i] = t++;
  for (auto nxt : adj[i]) {
    if (nxt == par) continue;
    dfs(nxt, i, d + 1);
  }
  en[i] = t - 1;
}
int getlca(int u, int v) {
  if (st[u] <= st[v] && en[v] <= en[u]) {
    return u;
  }
  for (int j = 16; j >= 0; j--) {
    int nxtu = anc[u][j];
    if (!(st[nxtu] <= st[v] && en[v] <= en[nxtu])) {
      u = nxtu;
    }
  }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

jail.cpp: In function 'int main()':
jail.cpp:92:8: warning: variable 'check' set but not used [-Wunused-but-set-variable]
   92 |   auto check = [&] (int i, int x) {
      |        ^~~~~

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