Submission #531761

#	Time	Username	Problem	Language	Result	Execution time	Memory
531761		devariaota	Money (IZhO17_money)	C++17	0 / 100	1 ms	204 KiB

money

#include <bits/stdc++.h>
using namespace std;

int main(){
  cin.tie(0) -> ios_base::sync_with_stdio(0);

  int n;
  cin >> n;
  vector<int> a(n);
  for(int i=0;i<n;i++) cin >> a[i];
  set<int> s;
  int ans = 0, i = 0;
  while(i < n)
  {
    s.insert(a[i]);
    if(a[i + 1] < a[i]) break;
    i++;
  }
  for(;i<n;i++)
  {
    auto x = s.upper_bound(a[i-1]);
    ans++;
    int y;
    if(x == s.end())
    {
      y = a[i];
      while(i < n)
      {
        s.insert(a[i]);
        if(a[i + 1] < a[i]) break;
        i++;
      }
    }
    else if(a[i] <= *x)
    {
      y = *x;
      while(i < n && a[i] <= y)
      {
        s.insert(a[i]);
        if(a[i + 1] < a[i]) break;
        i++;
      }
    }
    else // a[i] > the el after prev element
    {
      s.insert(a[i]);
    }
  }
  cout << ans << '\n';
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55