from math import log

n = int(input())
b = int(input())
A = list(map(float, input().split()))

ans = 0
for a in A:
    ans += a * pow(b, a - 1)
    
print(ans)

ans = 0
for a in A:
    if a != -1:
        ans += pow(b, a + 1) / (a + 1)
    else:
        ans += log(b)

print(ans)