제출 #573511

#제출 시각아이디문제언어결과실행 시간메모리
573511vovamrMoney (IZhO17_money)C++17
100 / 100
938 ms57932 KiB
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) 	(x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }

inline void solve() {
	int n;
	cin >> n;
	ve<int> a(n);
	for (auto &i : a) cin >> i;

	int need = iinf;

	int ans = 1;
	set<int> st{a[0]};
	for (int i = 1; i < n; ++i) {
		if (a[i - 1] > a[i] || need < a[i]) {
			++ans;
			auto it = st.upper_bound(a[i]);
			need = (it == st.end() ? iinf : *it);
		}
		st.insert(a[i]);
	}
	cout << ans;
}

signed main() {
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int q = 1; // cin >> q;
	while (q--) solve();
	cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}
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