from numpy.linalg import solve

N = int(input())
a = input().split()
A = 0
for i in a:
    A += int(i)
num = A / (N - 1)

left = [[1, 1],
        [2, 4]]

right = [N, num]

x = solve(left, right)[0]
y = solve(left, right)[1]

print(int(x), int(y))