def divisor_list(N): #約数のリスト
    if N == 1: return [1]
    res = []
    for i in range(1,N):
        if i*i >= N: break
        if N%i == 0:
            res.append(i)
            res.append(N//i)
    if i*i == N: res.append(i)
    return sorted(res)

def check(x):
    v = 0
    for ai in a:
        if v+ai > x: return 0
        v += ai
        if v == x: v = 0
    return 1

n = int(input())
*a, = map(int,input().split())
s = sum(a)
ans = 0
for d in divisor_list(s):
    if check(s//d): ans = d
print(ans)