void main()
{
	int n,i,j,t,sum=0;
	float aver,k1,k2;
	int a[300];
	scanf("%d",&n);
	for (i=0;i<n;i++)
		scanf("%d",&a[i]);
	printf("\n");
	for (j=0;j<n-1;j++)
		for (i=0;i<n-1-j;i++)
			if (a[i]>a[i+1])
			{t=a[i];a[i]=a[i+1];a[i+1]=t;}
	for(i=0;i<n;i++)
		sum=sum+a[i];
	aver=(float)sum/(float)n;
	k1=aver-a[0];
	k2=a[n-1]-aver;
		if (k1<k2)
		{printf("%d",a[n-1]);}
		if (k1>k2)
		{printf("%d",a[0]);}
		if (k1==k2)
		{printf("%d,%d",a[0],a[n-1]);}
}