Submission #409112

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
409112	2021-05-20 08:19:57	vuhoanggiap	Synchronization (JOI13_synchronization)	C++17	100 / 100	368 ms	25444 KiB

synchronization

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#include <bits/stdc++.h>
#define pb push_back
using namespace std;
const int maxN = 1e5 + 5, maxM = 2e5 + 5;  
int n, m, q; 
vector<int> adj[maxN]; 
int A[maxM], B[maxM]; 
bool state[maxM]; 
int euler; 
int s[maxN], e[maxN]; 
int jump[maxN][22]; 
void dfs(int u, int p) {
  s[u] = ++euler; 
  jump[u][0] = p; 
  for(int i = 1; i < 20; i++) 
    jump[u][i] = jump[jump[u][i - 1]][i - 1]; 
  for(auto v : adj[u])
    if(v != p)
      dfs(v, u); 
  e[u] = euler; 
}
int fen[maxN]; 
void update(int i, int val) { while(i <= n + 1) fen[i] += val, i += (i & (-i)); }
int query(int i) { int ret = 0; while(i) ret += fen[i], i -= (i & (-i)); return ret; }
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40