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

using namespace std;

int main() {
	int n, b;
	cin >> n >> b;
	vector<double> a(n, 0);
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}

	double x1, x2;
	x1 = x2 = 0;

	for (int i = 0; i < n; i++) {
		x1 += a[i] * pow(b, a[i] - 1.0);
		if (a[i] == -1.0) {
			x2 += log(b);
		} else {
			x2 += 1.0 / (a[i] + 1) * pow(b, a[i] + 1.0);
		}
	}

	printf("%.15f\n", x1);
	printf("%.15f\n", x2);
	return 0;
}