#include<stdio.h>

void main() {
	int a[100];
	int n,i,c=0;
	scanf("%d",&n);

	for(i=0;i<n;i++){
		scanf("%d",&a[i]);
		if(a[i]>=90){
			c++;
		}
	}

	printf("%d\n",c);
}
/**************************************************************
	Problem: 1423
	User: admin
	Language: C
	Result: Accepted
	Time:12 ms
	Memory:1144 kb
****************************************************************/