def solve(a):
  ans=10**9
  ans2=-1
  kouho=set()
  n=len(a)
  d=a[-1]-a[0]
  for i in range(1,400):
    kouho.add(i)
    if n>=i:
      kouho.add(n//i)
      kouho.add((n+i-1)//i)
    if d>=i and d<=i*2*10**5:
      kouho.add(d//i)
      kouho.add((d+i-1)//i)
  kouho=sorted(list(kouho))
  for x in kouho:
    last=-1
    cnt=0
    for i in a:
      if i//x!=last:
        cnt+=1
        last=i//x
    if ans>cnt*(x+1):
      ans=cnt*(x+1)
      ans2=x
  return ans,ans2

n=int(input())
a=list(map(int,input().split()))
ans1,ans2=solve(a)

print(ans2)
print(ans1)