제출 #707574

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
707574	2023-03-09 11:17:46	Trisanu_Das	Osumnjičeni (COCI21_osumnjiceni)	C++17	110 / 110	295 ms	31176 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ar array
 
const int mxN=2e5;
int n, q, l[mxN], r[mxN], anc[mxN][18];
 
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n;
  for (int i=0; i<n; ++i)
    cin >> l[i] >> r[i];
  set<ar<int, 2>> s;
  for (int i=n-1, j=n-1; ~i; --i) {
    while(1) {
      if (s.empty()||r[i]<(*s.begin())[0]||l[i]>(*s.rbegin())[1]) {
        s.insert({l[i], r[i]});
        break;
      }
      auto it=s.lower_bound({l[i], -1});
      if ((it==s.end()||r[i]<(*it)[0])&&(it==s.begin()||(*prev(it))[1]<l[i])) {
        s.insert({l[i], r[i]});
        break;
      }
      s.erase({l[j], r[j]});
      --j;
    }
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 50 / 50