
void main()
{
	int b,a[100],i,m=0,n=0,o=0,p=0;
	double s1,s2,s3,s4;
	scanf("%d",&b);
	for(i=0;i<b;i++)
	{
		scanf("%d",&a[i]);
		if(a[i]>=0 && a[i]<=18)
		{
			m=m+1;
		}
		else if(a[i]>=19 && a[i]<=35)
		{
			n=n+1;
		}
		else if(a[i]>=36 && a[i]<=60)
		{
			o=o+1;
		}
		else
		{
			p=p+1;
		}
	}
	s1=(double)m/(double)b;
	s2=(double)n/(double)b;
	s3=(double)o/(double)b;
	s4=(double)p/(double)b;
	printf("1-18: %.2lf",s1*100);
	printf("%%\n");
	printf("19-35: %.2lf",s2*100);
	printf("%%\n");
	printf("36-60: %.2lf",s3*100);
	printf("%%\n");
	printf("60??: %.2lf",s4*100);
	printf("%%");
}