#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N,B;
double A[101];
double a,b;

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>B;
	FOR(i,N) cin>>A[i];
	FOR(i,N) if(A[i]!=0) a+=A[i]*pow(B,A[i]-1);
	FOR(i,N) {
		if(A[i]!=-1) b+=1.0/(A[i]+1)*pow(B,A[i]+1);
		else b+=log(B);
	}
	_P("%.12lf\n",a);
	_P("%.12lf\n",b);
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}