#coding: UTF-8

import sys
from math import log
from collections import deque
from functools import reduce

### defs ###
def diff(A,B):
	return sum(map(lambda a:a*B**(a-1), A))

def integ(A,B):
	return sum(map(lambda a:B**(a+1)/(a+1) if a!=-1.0 else log(B),A))

### main ###
N = int(sys.stdin.readline())
B = int(sys.stdin.readline())
A = list(map(float,sys.stdin.readline().split()))

print(diff(A,B))
print(integ(A,B))