#include <iostream>
#include<iomanip>
#include <fstream>
//#define A max 99
//-------------------------------------------------------------
using namespace std;
const int VF = 99;
const char CDfv[]="Duomenys.txt";
const char CRfv[]="Rezultatai.txt";
//-------------------------------------------------------------
int main(){
    int n, dbd, max, sum, A[VF];
    ifstream fd(CDfv);
    fd >> n;
    ofstream fr (CRfv);
    for (int i=0; i<n; i++){
        fd >> A[i];
}
        max=A[0];
        for (int i=1; i<n; i++){
            if (A[i]>max)
                max=A[i];
        }
        for (int i=1; i<=max; i++){
            sum=0;
            for(int j=0; j<n; j++){
                if(A[j]%i==0)
                    sum=sum+1;
            }
    if (sum==n)
    dbd=i;
      }
    fd.close();
    fr.close();
    return 0;
}