int main(){
   int age[100];
   int i,n;
   scanf("%d",&n);
   
   for(i=0;i<n;i++){
        scanf("%d",&age[i]);
   }
   double s1=0.0,s2=0.0,s3=0.0,s4=0.0,m=0.0;
   for(i=0;i<n;i++){
	   if(1<=age[i]&&age[i]<=18){
             s1 +=1;
	   }else if(19<=age[i]&&age[i]<=35){
		   s2 += 1;
	   }else if(36<=age[i]&&age[i]<=60){
		   s3 += 1;
	   }else if(age[i]>60){
		   s4 += 1;
	   }
   }
   m=s1+s2+s3+s4;
   
   printf("1-18: %.2lf%%\n",100*s1/m);
   printf("19-35: %.2lf%%\n",100*s2/m);
   printf("36-60: %.2lf%%\n",100*s3/m);
   printf("Over60: %.2lf%%\n",100*s4/m);
  
   return 0;
}
