Submission #49902

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
49902	2018-06-04 14:05:30	tmwilliamlin168	Synchronization (JOI13_synchronization)	C++14	100 / 100	390 ms	20908 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std;
const int mxN=1e5;
int n, m, q, x[mxN-1], y[mxN-1], st[mxN], en[mxN], dt, ft[mxN+1], v[mxN], lc[mxN-1], anc[mxN][17];
vector<int> adj[mxN];
inline void upd(int i, int x) {
  for(++i; i<=n; i+=i&-i)
    ft[i]+=x;
}
inline int qry(int i) {
  int r=0;
  for(++i; i; i-=i&-i)
    r+=ft[i];
  return r;
}
void dfs(int u, int p) {
  st[u]=dt++;
  anc[u][0]=p;
  for(int i=1; i<17; ++i)
    anc[u][i]=anc[u][i-1]==-1?-1:anc[anc[u][i-1]][i-1];
  for(int v : adj[u])
    if(v!=p)
      dfs(v, u);
  en[u]=dt;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40