Submission #644052

#	Time	Username	Problem	Language	Result	Execution time	Memory
644052		ymm	Money (IZhO17_money)	C++17	100 / 100	1071 ms	54232 KiB

money

#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

int main()
{
	cin.tie(0) -> sync_with_stdio(false);
	int n;
	cin >> n;
	set<int> s;
	auto it = s.end();
	int ans = 1;
	int lst = -1;
	Loop (i,0,n) {
		int x;
		cin >> x;
		auto it2 = s.lower_bound(x);
		auto it3 = s.upper_bound(x);
		if (x < lst || (it != it2 && it != it3)) {
			it = it3;
			++ans;
		}
		s.insert(x);
		lst = x;
	}
	cout << ans << '\n';
}

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