#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: chenmingyu
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/