#include <stdio.h>

int main(){
	int n;
	scanf("%i", &n);
	int x, uppcounter = 0, downcounter = 0;
	int prejsnja;
	int att = 0;

	scanf("%i", &prejsnja);
	uppcounter = 1;
	for(int i=1; i<n; i++){
		scanf("%i", &x);
		if(x > prejsnja){
			uppcounter++;
			downcounter = 0;
		}
		else if(x<prejsnja){
			downcounter++;
		}
		else{
			uppcounter=0;
			downcounter = 0;
		}
		if(uppcounter >= 9 && downcounter >= 9){
			att++;
			uppcounter = 0;
			downcounter = 0;
		}
		prejsnja = x;
	}
	printf("%i", att);

	return 0;
}