var i,r,a:integer;
begin cls; r:=0;For i:=1 to 4 dobeginread(a);if a mod 2 = 0 then inc(r);end;
writeln('chetnyh = ',r);readln;end.
var i,r,a:integer;
begin cls;
r:=0;
For i:=1 to 4 do
begin
read(a);
if a mod 2 = 0 then inc(r);
end;
writeln('chetnyh = ',r);
readln;
end.