#include <bits/stdc++.h>

using namespace std;

int main() {
    int n;
    cin >> n;

    long long a[1000005];

    for (int i = 1; i <= n; i++)
        cin >> a[i];

    int dem = 0;

    if (a[1] < a[2])
        dem++;

    for (int i = 2; i <= n - 1; i++) {
        if (a[i] < a[i - 1] && a[i] < a[i + 1])
            dem++;
    }

    if (a[n] < a[n - 1])
        dem++;

    cout << dem;

    return 0;
}