import itertools

N = int(input().strip())

lst = input().strip().split(' ')
mmin = 0
mmax = 0

for i in itertools.combinations(lst, r=2):
  a, b = int(i[0]), int(i[1])
  a, b = min(a, b), max(a, b)
  #print('a:{} b:{}'.format(a, b))
  
  if (mmin == 0) or (mmin > b - a):
    mmin = b - a
  
  if (mmax == 0) or (mmax < b - a):
    mmax = b - a

print(mmin)
print(mmax)