Submission #906922

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
906922	2024-01-15 04:48:39	daoquanglinh2007	Money (IZhO17_money)	C++17	100 / 100	1303 ms	58308 KiB

money

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#include <bits/stdc++.h>
using namespace std;
const int NM = 1e6, inf = 1e9+7;
int N, a[NM+5], ans = 0;
set <int> S;
set <int>::iterator it;
int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  
  cin >> N;
  for (int i = 1; i <= N; i++) cin >> a[i];
  
  for (int i = 1; i <= N; i++){
    int j = i, l, r;
    if (S.empty()) l = -inf, r = +inf;
    else if (a[i] < *S.begin()) l = -inf, r = *S.begin();
    else if (a[i] >= *(--S.end())) l = *(--S.end()), r = +inf;
    else{
      it = S.upper_bound(a[i]);
      r = *it;
      it--;
      l = *it;
    }
    while (j <= N && a[j] >= l && a[j] <= r){
      S.insert(a[j]);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55