N = int(input())

l = list(map(int, input().split()))

min = abs(l[1] - l[0])

for i in range(N-1):
    if min > abs(l[i + 1] - l[i]):
        min = abs(l[i + 1] - l[i])

print(min)
print(abs(l[-1] - l[0]))