#include<iostream>
#include<vector>
#include<cmath>
#include<iomanip>
#include<numeric>

int main() {
	int n, b;
	std::cin >> n >> b;


	std::vector<double> v(n);
	for (int i = 0; i < n; i++) {
		std::cin >> v[i];
	}

	double bibun = 0;
	for (int i = 0; i < n; i++) {
		bibun += v[i] * pow(b, v[i] - 1);
	}

	double sekibun = 0;
	for (int i = 0; i < n; i++) {
		if (v[i] == -1) {
			sekibun += log(b);
		}else
		sekibun += 1 / (v[i] + 1) * std::pow(b, v[i] + 1);
	}

	std::cout << std::setprecision(10) << std::fixed << bibun << std::endl;
	std::cout << std::setprecision(10) << std::fixed << sekibun << std::endl;

	return 0;
}