# include <stdio.h>
# define MAXN 5
/** Ypologismos mesou orou dianysmatos **/
void readVector(int x[],int n)
{
	int i;
	for(i=0;i<n;i++)
	{
		printf("Dose stoixeio %d ?",i);
		scanf("%d",&x[i]);
	}
}


/** O mesos oros einai panta dekadikos arithmos **/
double average(int x[],int n)
{
	double sum=0;
	int i;
	for(i=0;i<n;i++)
	{
		sum=sum+x[i];
	}
	return sum/n;
}

int main()
{
	int x[MAXN];
	double t;
	readVector(x,MAXN);
	t=average(x,MAXN);
	printf("Mesos oros %.2lf\n",t);
	return 0;
}