import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int sum = 0;
        HashSet<Integer> all = new HashSet<>();
        for (int i = 0; i < n; i++) {
            sum += sc.nextInt();
            all.add(sum);
        }
        int ans = 1;
        for (int i = 1; i <= Math.sqrt(sum); i++) {
            if (sum % i == 0) {
                if (check(i, all, sum)) {
                    ans = Math.max(ans, sum / i);
                }
                if (check(sum / i, all ,sum)) {
                    ans = Math.max(ans, i);
                }
            }
        }
        System.out.println(ans);
    }
    
    static boolean check(int x, HashSet<Integer> all, int sum) {
        for (int i = 1; i * x <= sum; i++) {
            if (!all.contains(i * x)) {
                return false;
            }
        }
        return true;
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}