#include <stdio.h>
#include <stdlib.h>

#define NMAX 500

int x[NMAX];

int comp(const void *a,const void *b){
	return *(int*)a-*(int*)b;
}

int main(){
	int n,sum=0;
	double avr;
	int i;
	
	freopen("stats.in","r",stdin);
	freopen("stats.out","w",stdout);

	scanf("%d",&n);
	getchar();
	for(i=0;i<n;i++){
		scanf("%d",x+i);
		getchar();
		sum+=x[i];
	}

	avr=sum/(double)n;
	printf("%.6lf\n",avr);

	qsort(x,n,sizeof(int),comp);

	if(n%2){
		printf("%.6lf",(double)x[n/2]);
	}else{
		printf("%.6lf",((double)(x[n/2]+x[n/2+1]))/2);
	}
	return 0;
}