var n,k,i,num:integer;

begin

readln(n);

for i:=1 to n do begin

readln(num);

if num mod 10 =6 then inc(k);

end;

writeln(k);

end.

ask_numbers = int(input())

number_list = []

for n in range(ask_numbers):

   number = str(input())

   number_list.append(number)

second_list = []

for item in number_list:

   if item[-1] == '6':

       second_list.append(item)

print(len(second_list))