Submission #33189

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
33189	2017-10-22 12:56:07	aome	Synchronization (JOI13_synchronization)	C++14	100 / 100	546 ms	16908 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
int n, m, q;
int cnt;
int res[N], lst[N];
int h[N], st[N], ed[N], pos[N];
int from[N], to[N];
int it[4 * N];
bool type[N];
vector<int> G[N];
void dfs(int u, int p) {
  st[u] = ++cnt, pos[cnt] = u;
  for (auto v : G[u]) {
    if (v == p) continue;
    h[v] = h[u] + 1, dfs(v, u);
  }
  ed[u] = cnt;
}
void build(int i, int l, int r) {
  if (l == r) {
    it[i] = ed[pos[l]]; return;
  }
  int mid = (l + r) >> 1;
  build(i << 1, l, mid), build(i << 1 | 1, mid + 1, r);
  it[i] = max(it[i << 1], it[i << 1 | 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