n = int(input())
a_list = list(map(int,input().split()))

min_dis = 200001

def min(a, b):
    return a if a <= b else b

for i in range(n-1):
    d = a_list[i+1] - a_list[i]
    min_dis = min(d, min_dis)
    
print(min_dis)
print(a_list[n-1] - a_list[0])