#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000

double diff(double C, double a) {
	return a * pow(C, a - 1);
}

double inte(double C, double a) {
	if (a != -1) {
		return pow(C, a + 1) / (a + 1);
	}
	else {
		return log(abs(C));
	}
}

int main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
	int N, B;
	cin >> N >> B;
	double A[20];
	rep(i, N) cin >> A[i];

	double ans1 = 0, ans2 = 0;
	rep(i, N) ans1 += diff(B, A[i]);
	rep(i, N) ans2 += inte(B, A[i]);
	cout << fixed << setprecision(14);
	cout << ans1 << endl << ans2 << endl;


    return 0;
}