#include <stdio.h>
#define MAX 100

int seiseki[MAX];
int size=0;

int record(int a){
	seiseki[size]=a;
	size++;
	return 0;
}

double average(){
	int i;
	double sum=0.0;
	for(i=0;i<size;i++)
	sum+=seiseki[i];
	
return sum/size;
}

int main(){
int score,num,i;
scanf("%d",&num);
printf("num=%d\n",num);
for(i=0;i<num;i++){
scanf("%d", &score);
printf("score=%d\n",score);
record(score);
}
printf("Ave=%lf",average());
return 0;
}