#include<bits/stdc++.h>
using namespace std;
int main(){
	int a[100],h=0,n,i;
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		if(a[i]>=90){
			h++;
		}
	}
	cout<<h;
}

/**************************************************************
	Problem: 1423
	User: chenjunlin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/