#define _USE_MATH_DEFINES
#include<bits/stdc++.h>
using namespace std;

#define int long long

int N, B;
double A[10];

signed main()
{
	cin >> N >> B;
	double ans1 = 0, ans2 = 0;
	for (int i = 0; i < N; i++)
	{
		cin >> A[i];
		ans1 += A[i]*pow((double)B, A[i] - 1.0);
		if (abs(A[i] + 1) < 1e-8) ans2 += log(B);
		else ans2 += pow((double)B, A[i] + 1.0)/(A[i] + 1.0);
	}
	printf("%f\n%f\n", ans1, ans2);
	return 0;
}