#include<bits/stdc++.h>
using namespace std ;
#define int long long 
int n , a[100005] , ans = 0 ;
signed main(){
	cin >> n ;
	for ( int i = 1 ; i <= n ; i++ )	cin >> a[i] ;
	sort( a + 1 , a + n + 1 , greater<int>() ) ;
	for ( int i = 1 ; i <= n ; i++ ){
		for ( int j = 1 ; j <= i - 1 ; j++ ){
			a[i] = (int)sqrt( a[i] ) ;
		}
		ans += a[i] ;
	}
	cout << ans ;
	return 0 ; 
}