#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,n,h,m=0;
	cin>>n;
	int a[n];
	for(i=0;i<=n-1;i++){
		cin>>a[i];		
	}
	for(h=0;h<=n-1;h++){		
		if(a[h]>=90){
			m++;
			
		}
    }
    cout<<m;
	return 0;
}
/**************************************************************
	Problem: 1423
	User: zhenghaoxuan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/