C :

#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);
}

C++ :

#include <iostream>
using namespace std;

int main(){
    int a[100],i,n,c = 0;
    cin>>n;
    for(i = 0;i < n;i++){
    	cin>>a[i];
    	if(a[i] >= 90){
    		c++;
		}
	}
	
	cout<<c<<endl;
}

Python :

n = int(input())
s = input().split()
c = 0
for i in range(0, len(s)):
    if int(s[i]) >= 90:
        c += 1
print(c)