Submission #381833

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
381833	2021-03-26 03:49:15	saarang123	Synchronization (JOI13_synchronization)	C++17	100 / 100	304 ms	24044 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std;
const int mxn = 100 * 1000 + 3, lgn = 19;
int tin[mxn], tout[mxn], bit[mxn], up[mxn][lgn], info[mxn], last[mxn];
bool active[mxn];
vector<int> g[mxn];
int n, m, q, tx = 1;
void upd(int x, int v) {
  for(; x <= n; x += (x & -x))
    bit[x] += v;
}
int qry(int x) {
  int res = 0;
  for(; x; x -= (x & -x))
    res += bit[x];
  return res;
}
void dfs(int v, int p = 0) {
  up[v][0] = p;
  info[v] = 1;
  tin[v] = tx++;
  for(int i = 1; i < lgn && up[v][i - 1]; i++)
    up[v][i] = up[up[v][i - 1]][i - 1];
  for(int u : g[v]) if(u != p) dfs(u, v);
  tout[v] = tx;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40