n = int(input())
A = list(map(int, input().split()))
s = sum(A)
for i in range(n):
    if s%(n-i) != 0:
        continue
    p = s//(n-i)
    #print(p)
    cur = 0
    flag = True
    for j in range(n):
        if cur+A[j]>p:
            flag=False
            break
        elif cur+A[j] == p:
            cur = 0
        else:
            cur += A[j]
    if flag:
        ans = i
        break
print(n-ans)