#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;
int a[100005];
bool cmp(int x, int y){
	return x > y;
}
int main(){
	int n, sum = 0;
	cin >> n;
	for (int i = 1;i <= n;i++){
		cin >> a[i];
	}
	sort(a+1, a+n+1, cmp);
	for (int i = 1;i <= n;i++){
		for (int j = 1;j < i;j++){
			a[i] = sqrt(a[i]);
		}
		sum += a[i];
		if (a[i] == 1){
			sum += n - i;
			break;
		}
	}
	cout << sum;
}