import sys

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    n = int(input())
    aa = LI()
    s = sum(aa)
    div = []
    for d in range(1, s):
        if d ** 2 > s: break
        if s % d: continue
        if d >= s // n: div.append(d)
        if s // d >= s // n: div.append(s // d)
    if len(div) > 1 and div[-1] == div[-2]:
        div.pop()
    div.sort()
    #print(div)
    cs=set()
    a=0
    for i in range(n):
        a+=aa[i]
        cs.add(a)
    #print(cs)
    for d in div:
        for kd in range(d,s+1,d):
            if kd not in cs:
                break
        else:
            print(s//d)
            break

main()