n=int(input())
a=list(map(int,input().split()))
ans_min=float('inf')
ans_max=0
for i in range(n):
    for j in range(i+1,n):
        x=a[i];y=a[j]
        ans_min=min(ans_min,abs(x-y))
        ans_max=max(ans_max,abs(x-y))
print(ans_min)
print(ans_max)