Submission #572576

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
572576	2022-06-04 17:19:50	model_code	Event Hopping (BOI22_events)	C++17	100 / 100	540 ms	25812 KiB

events

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#include <bits/stdc++.h>
#define st first
#define nd second
using namespace std;
const int LG = 17;
int main() {
  int n, q; cin >> n >> q;
  vector<vector<int>> nx(LG);
  vector<vector<pair<int, int>>> rmq(LG);
  for (int i = 0; i < LG; i++)
    nx[i].resize(n), rmq[i].resize(n, {1'000'000'001, -1});
  vector<pair<int, int>> a(n);
  vector<int> b;
  for (int i = 0; i < n; i++) {
    cin >> a[i].st >> a[i].nd;
    b.push_back(a[i].nd);
  }
  sort(b.begin(), b.end());
  b.erase(unique(b.begin(), b.end()), b.end());
  for (int i = 0; i < n; i++) {
    int r = lower_bound(b.begin(), b.end(), a[i].nd) - b.begin();
    rmq[0][r] = min(rmq[0][r], {a[i].st, i});
  }
  for (int i = 0; i + 1 < LG; i++)
    for (int j = 0; j + (1 << (i + 1)) <= n; j++)
      rmq[i + 1][j] = min(rmq[i][j], rmq[i][j + (1 << i)]);
  for (int i = 0; i < n; i++) {
    int l = lower_bound(b.begin(), b.end(), a[i].st) - b.begin();
    int r = lower_bound(b.begin(), b.end(), a[i].nd) - b.begin();
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20
• Subtask 6: 30 / 30