Submission #398553

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
398553	2021-05-04 13:54:46	nikatamliani	Synchronization (JOI13_synchronization)	C++14	100 / 100	335 ms	27240 KiB

synchronization

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#include "bits/stdc++.h"
#define ll long long
using namespace std;
const int N = 2e5+10, LOG = 20;
int in[N], out[N], t[N], L[N][LOG], ans[N], last[N], is_active[N];
vector<int> g[N];
int n, m, q;
void dfs(int x, int p) {
  static int timer = 0;
  in[x] = ++timer;
  L[x][0] = p;
  for(int i = 1; i < LOG; ++i) {
    L[x][i] = L[L[x][i - 1]][i - 1];
  }
  for(int to : g[x]) {
    if(to != p) {
      dfs(to, x);
    }
  }
  out[x] = ++timer;
}
void upd(int x, int coeff) {
  for(; x <= 2*n; x += x & -x) {
    t[x] += coeff;
  }
}
int sum(int x) {
  int ans = 0;
  for(; x > 0; x -= x & -x) {
    ans += t[x];
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40