import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

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