Submission #491169

#	Time	Username	Problem	Language	Result	Execution time	Memory
491169		inksamurai	Po (COCI21_po)	C++17	70 / 70	14 ms	1100 KiB

Main

#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define crep(i,x,n) for(int i=x;i<n;i++)
#define drep(i,n) for(int i=n-1;i>=0;i--)
#define vec(...) vector<__VA_ARGS__>
#define _3cSpNGp ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
using namespace std;
typedef long long ll;
typedef long double ld;
using pii=pair<int,int>;
using vi=vector<int>;
 
int main(){
_3cSpNGp;
	int n;
	cin>>n;
	vi a(n);
	rep(i,n){
		cin>>a[i];
	}
	vi stk;
	int ans=0;
	rep(i,n){
		if(a[i]){
			while(sz(stk) and stk.back()>a[i]){
				stk.pop_back();
			}
			if(sz(stk)==0 or stk.back()!=a[i]){
				ans=ans+1;
				stk.pb(a[i]);
			}
		}else{
			stk.clear();
		}
	}
	cout<<ans<<"\n";
//	
	return 0;
}

• Subtask 1: 70 / 70