import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] arr = new int[n];
        int sum = 0;
        for (int i = 0; i < n; i++) {
            arr[i] = sc.nextInt();
            sum += arr[i];
        }
        TreeSet<Integer> another = new TreeSet<>();
        for (int i = 1; i <= Math.sqrt(sum); i++) {
            if (sum % i != 0) {
                continue;
            }
            another.add(sum / i);
            int tmp = 0;
            boolean flag = true;
            int count = 0;
            for (int x : arr) {
                tmp += x;
                if (tmp > i) {
                    flag = false;
                    break;
                } else if (tmp == i) {
                    tmp = 0;
                    count++;
                }
            }
            if (flag) {
                System.out.println(count);
                return;
            }
        }
        for (int y : another) {
            int tmp = 0;
            boolean flag = true;
            int count = 0;
            for (int x : arr) {
                tmp += x;
                if (tmp > y) {
                    flag = false;
                    break;
                } else if (tmp == y) {
                    tmp = 0;
                    count++;
                }
            }
            if (flag) {
                System.out.println(count);
                return;
            }
        }
    }
}