#include<iostream>

using namespace std;

int main( ) {
	
	int n; cin >> n;
	int high[n+1], ans = 0;
	for ( int i = 1; i <= n; i++ )
		cin >> high[i];
		
	for ( int i = 2; i < n; i++ ) {
		if ( high[i-1] > high[i] ) {
			int tmp = i;
			
			while ( tmp <= n && high[tmp] <= high[i] )
				tmp++;
			if ( high[tmp] > high[i] )
				ans++;
				
			i = tmp - 1;
		} 
	}
	
	cout << ans << endl;
	
	return 0;
	
}

不是我真无语啊，输出来和第一个点一样，都是0，然后被判WA？系统出问题啦？无语想哭