代码：

#include<iostream>
#include<algorithm>
#include<iomanip>
#define int long long
#define N 10005

using namespace std;

int n,a[N],ans;

signed main()
{
    cin >> n;
    for(int i = 1;i <= n;i++)
    {
        cin >> a[i];
    }
    for(int i = 2;i < n;i++)
    {
        if(a[i] < a[i-1] && a[i] <= a[i+1])
        {
            ans++;
        }
    }
    cout << ans;
    return 0;
}