Submission #395511

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
395511	2021-04-28 12:18:21	rama_pang	Segments (IZhO18_segments)	C++17	100 / 100	1963 ms	10604 KiB

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#include <bits/stdc++.h>
using namespace std;
const int BLOCK = 1800;
const int BSIZE = 200005 / BLOCK + 5;
class Solver {
 public:
  vector<pair<int, int>> pending;
  vector<pair<int, int>> intervals;
  vector<int> lengths[BSIZE]; // (r - l + 1)
  pair<int, int> minmaxl[BSIZE]; // min and max l in blockslr[]
  vector<pair<int, int>> blockslr[BSIZE]; // (l, r)
  int Isect(int a, int b, int l, int r) {
    return max(0, min(b, r) - max(a, l) + 1);
  }
  void Insert(int l, int r) {
    pending.emplace_back(l, r);
    if (pending.size() >= BLOCK) {
      for (auto p : pending) intervals.emplace_back(p);
      sort(begin(intervals), end(intervals));
      pending.clear();
      for (int i = 0; i < int(intervals.size()); i += BLOCK) {
        int b = i / BLOCK;
        lengths[b].clear();
        blockslr[b].clear();
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 15 / 15
• Subtask 3: 16 / 16
• Subtask 4: 17 / 17
• Subtask 5: 20 / 20
• Subtask 6: 25 / 25