Submission #478295

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
478295	2021-10-06 19:47:26	amunduzbaev	Synchronization (JOI13_synchronization)	C++14	100 / 100	302 ms	28096 KiB

synchronization

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#include "bits/stdc++.h"
using namespace std;
#define ar array
const int N = 2e5 + 5;
vector<int> edges[N];
int tin[N], tout[N], t = 1, par[N][20], res[N];
struct BIT{
  int tree[N];
  void add(int i, int v){
    for(++i; i < N; i += (i & -i)) tree[i] += v;
  }
  
  int get(int i){
    int rr = 0;
    for(++i; i; i -= (i & -i)) rr += tree[i];
    return rr;
  }
}tree;
void dfs(int u, int p = -1){
  tin[u] = t++;
  for(int i=1;i<20;i++) par[u][i] = par[par[u][i-1]][i-1];
  for(auto x : edges[u]){
    if(x == p) continue;
    par[x][0] = u, dfs(x, u);
  } tout[u] = t;
  tree.add(tin[u], 1);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40