FoxAndNumberGame

//********nikhiljugale007**********//
 
#include<bits/stdc++.h>
#include<iostream>
#include<vector>
#include<cstring>
#include<algorithm>
#include<set>
#include<iterator>
 
using namespace std;
 
#define fast        ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define ll          long long 
#define v           vector<ll int>
#define it          iterator it
#define pb          push_back
#define f(a,b)      for(long long int i=a;i<b;i++)
#define fv(v)       for(auto i=v.begin() ; i!=v.end();i++)
#define min         min_element
#define max         max_element
#define hell        1000000007
 
 
 
int main(){
 
    fast;
 
    #ifndef ONLINE_JUDGE
		//Read input
		freopen("input.txt","r",stdin);
		//Write output
		freopen("output.txt","w",stdout);
 
	#endif
 
    int n;
    cin>>n;
    int arr[n];
 
    for(int i=0;i<n;i++)
        cin>>arr[i];
 
    sort(arr,arr+n);
    int smallest = arr[0];
    int largest = arr[n-1];

    while(smallest != largest){
        int temp = arr[0];
        for(int i = 0; i <n ;i++){
            if(arr[i]>temp){
                arr[i]-=temp;
            }
        }
        sort(arr,arr+n);
        smallest = arr[0];
        largest = arr[n-1];
    }   
    cout<<arr[0]*n<<endl;
}