제출 #372798

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
372798		Nimbostratus	Po (COCI21_po)	C++17	70 / 70	14 ms	2668 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define eb emplace_back
#define pb push_back
#define ppb pop_back
#define ub upper_bound
#define lb lower_bound
#define bs binary_search
#define cln(a,s) memset((a),0,sizeof((a)[0])*(s))
#define all(x) (x).begin() , (x).end()
#define fi first
#define se second
#define int long long
using pii = pair<int,int>;
using ll = long long;
const int maxn = 2e5+5;
const int inf = 2e9;
const int mod = 1e9+7;

int n,a[maxn],ans;
stack<int> st;

int32_t main () {
	ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0);
	cin >> n;
	for(int i=1;i<=n;i++) cin >> a[i];
	ans = !!a[1];
	st.push(a[1]);
	for(int i=2;i<=n;i++) {
		while(!st.empty() && st.top() > a[i]) st.pop();
		if(st.empty() || st.top() < a[i]) ans += !!a[i];
		st.push(a[i]);
	}
	cout << ans << endl;
}	
	

• Subtask 1: 70 / 70