# No.716 距離
def select_distance_min(n, a):
    if len(a) == 1:
        return n
    
    for i in a[1:]:
        n = min(i - a[0], n)
    return select_distance_min(n, a[1:])

n = int(input())
a = [int(i) for i in input().split()]

distance_max = a[n - 1] - a[0]

print(select_distance_min(distance_max, a))
print(distance_max)