N=int(input())
a=list(map(int,input().split()))
SA=sum(a)
L=[]
F=0
for i in range(1,int(SA**0.5)+1):
    if SA%i==0:
        L.append(i)
        L.append(SA//i)
L=set(L)
L=list(L)
L.sort()
#print(L)
#print(a)
R=[0]
D={}
for i in range(N):
    D[R[-1]+a[i]]=1
    R.append(R[-1]+a[i])
    
#print(L)
for l in L:
    F=0
    for i in range(1,SA+1):
        if l*i>SA:
            break
        if l*i not in D:
            F=1
            break
    if F==0:
        print(SA//l)
        exit()