#include <bits/stdc++.h>
using namespace std;

int n, a[1000005];
bool cmp(int x, int y){
	return x>y;
}

int main(){

	int sum = 0, max = 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++){
		sum+=a[i];
		for(int j = i+1; j <= n; j++){
			a[j] = (int)sqrt(a[j]); 
		} 
	}
	cout << sum;
	return 0;
}