#include <iostream>

using namespace std;

int N;
int mic, mare, sol;
int V[100005];

int main()
{
    cin >> N;
    for (int i = 1; i <= N; ++i)
        cin >> V[i];

    for (int i = 1; i <= N; ++i)
    {
        if (mic == 9)
        {
            if (mare == 9)
                ++sol;

            if (V[i] > V[i + 1])
                ++mare;
            else
            {
                mare = 0;
                mic = 0;
            }

            continue;
        }

        if (V[i] < V[i + 1])
            ++mic;
        else
            mic = 0;
    }

    cout << sol << '\n';

    return 0;
}