Submission #971229

#	Time	Username	Problem	Language	Result	Execution time	Memory
971229		devariaota	Money (IZhO17_money)	C++17	100 / 100	1076 ms	58132 KiB

money

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

typedef long long ll;
const ll mod = 1e9 + 7;
#pragma GCC optimize("Ofast")
#define vi vector<int>
#define vll vector<ll>
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define fi first
#define sc second
#define endl '\n'
#define gl ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int main()
{
  int n, id = 1, ans = 1, akhir = INT_MAX;
  cin >> n;
  
  vi a(n);
  set<int> st;
  
  for(int i = 0; i < n; i++) cin >> a[i];
  st.insert(a[0]);
  
  while(a[id] >= a[id - 1]  and id < n){
    st.insert(a[id]);
    id++;
  }
  
  while(id < n){
    if(a[id] < a[id - 1] or a[id] > akhir){
      ans++;
      auto it = st.ub(a[id]);
      if(it != st.end()) akhir = *it;
      else akhir = INT_MAX;
    }
    st.insert(a[id]);
    id++;
  }
  
  cout << ans << endl;
}

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