void main()
{
	int n,i,t=0;
	float pj=0.0,max,a[300],b[300];
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{	scanf("%f",&a[i]);pj=pj+a[i];}
	pj=pj/n;							//	printf("pj%f\n",pj);
	for(i=0;i<n;i++)
	{if(a[i]>pj)b[i]=a[i]-pj;else b[i]=pj-a[i];}
	max=b[0];
	for(i=1;i<n;i++)
		if(max<b[i])max=b[i];			//printf("max%f\n",max);
		for(i=0;i<n;i++)
			{	if(b[i]==max&&t==0){printf("%d",(int)a[i]);t++;}
				else if(b[i]==max)printf(",%d",(int)a[i]);}
}