#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