#include <iostream>
#include <cmath>
#include <vector>

using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)

int main(void)
{
	int n, b;
	double f1 = 0, f2 = 0, t;
	vector<double> a;
	cin >> n >> b;
	rep(i, 0, n) {
		cin >> t;
		a.push_back(t);
	}

	rep(i, 0, n) {
		f1 += a[i] * pow(b, a[i] - 1);
	}

	rep(i, 0, n) {
		if (a[i] == -1) f2 += log(b);
		else f2 += (1 / (a[i] + 1)) * pow(b, a[i] + 1);
	}

	printf("%.5lf\n%.5lf\n", f1, f2);
	
	return 0;
}