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

const int N = 100000;
int n, a[N + 5], ans;
bool cmp(int x, int y){
	return x > y;
}
signed main(){
	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 && a[i] > 1; j++){
			a[i] = sqrt(a[i]);
		}
		ans += a[i];
	}
	cout << ans;
	return 0;
}