int main(){
int n,i,o=0,p=0,q=0,s=0,sum=0;
double a,b,c,d;
scanf("%d",&n);
int nl[n];
for(i=0;i<n;i++){
  scanf("%d",&nl[i]);
}
for(i=0;i<n;i++){
  if((nl[i])>=1&&(nl[i])<=18) {
       o++;
  }
  else if((nl[i])>=19&&(nl[i])<=35){
       p++;
  }
  else if((nl[i])>=36&&(nl[i])<=60){
       q++;
  }
  else{
       s++;
  }
}
   sum=o+p+q+s;
   a=(100.00*o)/sum;
   b=(100.00*p)/sum;
   c=(100.00*q)/sum;
   d=(100.00*s)/sum;
   printf("1-18: %.2lf%\n",a);
   printf("19-35: %.2lf%\n",b);
   printf("36-60: %.2lf%\n",c);
   printf("Over60: %.2lf%\n",d);
return 0;
}