#include<bits/stdc++.h>
using namespace std;
int ans=0;
int main(){
   int n;
   int a[10000];
   cin>>n;
   for(int i=1;i<=n;i++)cin>>a[i];
   for(int i=1;i<=n;i++){
   	if(a[i]=a[i+1]){
   		if(a[i-1]>a[i]&&a[i+1]<a[i+2])ans++;
   	}
   	else if(a[i-1]>a[i]&&a[i]<a[i+1])ans++;
   	else continue;
   }
   cout<<ans+2;
   return 0;
}

求救aaaaaaaaaaa