int main()
{
	int n,a[300]={0},i,j=0,b[300]={0};
	double total=0,average,sub[300]={0},max=0;
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d",&a[i]);
		total+=a[i];
	}
	average=total/n;
	for(i=0;i<n;i++)
	{
		sub[i]=fabs(a[i]-average);
	}
	for(i=0;i<n;i++)
	{
		if(sub[i]>max)
			max=sub[i];
	}
	j=0;
	for(i=0;i<n;i++)
	{
		if(sub[i]==max)
		{
			b[j]=a[i];
			j+=1;
		}
	}
	if(j==1)
		printf("%d",b[0]);
	else 
	{
		for(i=0;i<j-1;i++)
			printf("%d,",b[i]);
		printf("%d",b[j-1]);
	}
	return 0;
}

			
	

		