import java.util.Scanner;

public class TableOrder $\{$

public static void main$($String$[]$ args$)\{$

Scanner scanner $=$ new Scanner$($System$.$in$)$;

$//$ Read the number of parties

int n $=$ scanner.nextInt$()$;

$//$ Initialize an array to store the count of each table size

int$[]$ tables $=$ new int$[4]$; $//$ Sizes: $2,4,6,8$

$//$ Process each party size and update the table count

for $($int i $=0$; i $<$ n; i$++)\{$

int group $=$ scanner.nextInt$()$;

int idx $=($group $-1)/2$;

tables$[$idx$]++$;

$\}$

$//$ Output the result in ascending order of popularity

for $($int i $=0$; i $<4$; i$++)\{$

int size $=2*($i $+1)$;

System.out.println$($size $+"$: $"+$ tables$[$i$])$;

$\}$

$\}$

$\}$