import math
n = int(input())
b = int(input())

dimlist = [ float(v) for v in input().split(" ")]


def derivative(c,d):
    e = d * ( c ** (d - 1.0) )
    return e

def integral(c,d):
    if d == -1.0:
        e = math.log(c)
    else:
        e = ( 1.0 / ( d + 1.0) ) * ( c ** ( d + 1.0 ) )
    return e

derivative_list = [ derivative(b,i) for i in dimlist] 
integral_list = [ integral(b,i) for i in dimlist]

print(sum(derivative_list))
print(sum(integral_list))