import math

N = int(raw_input())
B = int(raw_input())
a = map(float, raw_input().split())

print sum(map(lambda x: x * B ** (x - 1), a))
print sum(map(lambda x: ((1.0 * B) ** (x + 1)) / (x + 1) if (x != -1) else math.log(B), a))