#include <iostream>
#include <math.h>
#include <vector>
#include <stdio.h>
using namespace std;

int main() {
	// your code goes here
	int x;
	double b,ans1=0,ans2=0;
	scanf("%d %lf",&x,&b);
	for(int i=0;i<x;i++){
		double a;
		scanf("%lf",&a);
		ans1+=(a*pow(b,a-1));
		if(a!=-1){
			ans2+=(1.0/(a+1)*pow(b,a+1));
		}else{
			ans2+=log(b);
		}
	}
	printf("%lf\n%lf\n",ans1,ans2);
}