import sys
input=lambda: sys.stdin.readline().rstrip()
n=int(input())
A=[int(i) for i in input().split()]
AA=[0]
for a in A:
  AA.append(AA[-1]+a)
AA=set(AA)

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

  divisors.sort()
  return divisors

s=sum(A)
D=make_divisors(s)
for d in D:
  mult=1
  while mult*d<s:
    if mult*d in AA:
      mult+=1
      continue
    else:
      break
  else:
    print(s//d)
    break
else:
  print(1)