#include <bits/stdc++.h>

using namespace std;

int main()
{int a[100005];
int n,i,j,c=0;
cin>>n;
for(i=1;i<=n;i++)
    cin>>a[i];
if(n<19)
{
    cout<<0<<'\n';
    return 0;
}
for(i=10;i<=n-9;i++)
{
    if(a[i-9]<a[i-8]&&a[i-8]<a[i-7]&&
       a[i-7]<a[i-6]&&a[i-6]<a[i-5]&&
       a[i-5]<a[i-4]&&a[i-4]<a[i-3]&&
       a[i-3]<a[i-2]&&a[i-2]<a[i-1]&&
       a[i-1]<a[i]&&a[i]>a[i+1]&&
       a[i+1]>a[i+2]&&a[i+2]>a[i+3]&&
       a[i+3]>a[i+4]&&a[i+4]>a[i+5]&&
       a[i+5]>a[i+6]&&a[i+6]>a[i+7]&&
       a[i+7]>a[i+8]&&a[i+8]>a[i+9])
       c++;
}
cout<<c<<'\n';
    return 0;
}