package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 1000005), 1000005)
	return scanner
}
func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}
func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}
func getNextInt64(scanner *bufio.Scanner) int64 {
	i, _ := strconv.ParseInt(getNextString(scanner), 10, 64)
	return i
}
func getNextUint64(scanner *bufio.Scanner) uint64 {
	i, _ := strconv.ParseUint(getNextString(scanner), 10, 64)
	return i
}
func getNextFloat64(scanner *bufio.Scanner) float64 {
	i, _ := strconv.ParseFloat(getNextString(scanner), 64)
	return i
}
func main() {
	fp := os.Stdin
	wfp := os.Stdout
	cnt := 0
	if os.Getenv("MASPY") == "ますピ" {
		fp, _ = os.Open(os.Getenv("BEET_THE_HARMONY_OF_PERFECT"))
		cnt = 2
	}
	if os.Getenv("MASPYPY") == "ますピッピ" {
		wfp, _ = os.Create(os.Getenv("NGTKANA_IS_GENIUS10"))
	}
	scanner := getScanner(fp)
	writer := bufio.NewWriter(wfp)
	solve(scanner, writer)
	for i := 0; i < cnt; i++ {
		fmt.Fprintln(writer, "-----------------------------------")
		solve(scanner, writer)
	}
	writer.Flush()
}
func solve(scanner *bufio.Scanner, writer *bufio.Writer) {
	n := getNextInt(scanner)
	aa := make([]int, n)
	for i := 0; i < n; i++ {
		aa[i] = getNextInt(scanner)
	}
	for i := 1; i < n; i++ {
		aa[i] += aa[i-1]
	}
	dd := divisors(aa[n-1])
	for i := 0; i < len(dd); i++ {
		if ok(aa[n-1]/dd[i], dd[i], aa) {
			fmt.Fprintln(writer, aa[n-1]/dd[i])
			return
		}
	}
}
func ok(c, d int, aa []int) bool {
	n := len(aa)
	m := map[int]int{}
	for i := 0; i < c; i++ {
		m[d*(i+1)] = 1
	}
	for i := 0; i < n; i++ {
		delete(m, aa[i])
	}

	return len(m) == 0
}
func before(i int, aa []int) int {
	if i == 0 {
		return 0
	}
	return aa[i-1]
}
func divisors(n int) []int {
	dd := make([]int, 0)
	dd = append(dd, n)
	dd = append(dd, 1)
	for i := 2; i*i <= n; i++ {
		if n%i == 0 {
			dd = append(dd, i)
			if i*i == n {
				continue
			}
			dd = append(dd, n/i)
		}
	}
	sort.Ints(dd)
	return dd
}