var n,a,k,i: integer;
begin
readln(n);
k:=0;
for i:=1 to n do
readln(a);
if a mod 4=0 then k:=k+1;
end;
writeln(k);
end.
var n,a,k,i: integer;
begin
readln(n);
k:=0;
for i:=1 to n do
begin
readln(a);
if a mod 4=0 then k:=k+1;
end;
writeln(k);
end.