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

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

	double x1 = 0, x2 = 0;
	for(int i=0;i<N;i++){
		x1 += a[i] * pow( B, a[i]-1);
		if( a[i] == -1 )x2 += log(B);
		else x2 += pow( B, a[i]+1) / (a[i]+1);

	}
	
	cout << fixed << setprecision(10) << x1 << endl;
	cout << fixed << setprecision(10) << x2 << endl;
	return 0;
}