def div(n):
    rlst = []
    for i in range(1, int(n ** 0.5) + 1):
        if n % i == 0:
            rlst.append(i)
            if i != n // i:
                rlst.append(n // i)
    rlst.sort()
    return rlst

N = int(input())
a = list(map(int, input().split()))
totala = sum(a)
divlst = div(totala)
ruia = [0] * (N + 1)
for i in range(N):
    ruia[i + 1] = a[i] + ruia[i]

ans = 0
for i in divlst:
    tmp = totala // i
    cnt = 0
    for j in ruia[1:]:
        if j % i == 0:
            cnt += 1

    if tmp == cnt:
        ans = max(ans, cnt)

print(ans)