import sys,random,bisect
from collections import deque,defaultdict
from heapq import heapify,heappop,heappush
from itertools import permutations
from math import gcd,log

input = lambda :sys.stdin.readline().rstrip()
mi = lambda :map(int,input().split())
li = lambda :list(mi())

N = int(input())
A = li()


arg_x = 1
min_val = 2*N
B = int((2*N)**.5)
for x in range(1,B):
    res = 1
    for i in range(1,N):
        if A[i]//x != A[i-1]//x:
            res += 1
    if res * (x+1) < min_val:
        arg_x,min_val = x,res*(x+1)

plus = set([i for i in range(N)])
minus = set([i for i in range(N)])
diff = [(A[i+1]-A[i],i) for i in range(N-1)]
diff.sort(reverse=True)
for x in range(B,2*N+1):
    """
    種類数は [2N/(x+1)] 以下
    → A_i-A_{i-1} >= x が成り立つiは [2N/(x+1)]個以下
    """
    while diff and diff[-1][0] <= x:
        d,i = diff.pop()
        plus.remove(i)
        minus.remove(i+1)
    #print(x,plus,minus)
    if len(plus) * (x+1) < min_val:
        tmp = 0
        for i in plus:
            tmp += A[i]//x
        for i in minus:
            tmp -= A[i]//x
        tmp += len(plus)
        tmp *= (x+1)
        if tmp < min_val:
            arg_x,min_val = x,tmp


print(arg_x)
print(min_val)