1)

var

 count, num: integer;

begin

 count := 0;

 repeat

   if (num > 0) and (num mod 2 = 0) then count := count + 1;

   read(num);

 until (num = 0);

 write(count);

end.

2)

var

 totalCount, count, num: integer;

begin

 totalCount := -1; count := 0; num := -1;

 repeat

   totalCount := totalCount + 1;

   if (num mod 3 = 0) then count := count + 1;

   read(num);

 until (num = 0);

 write((count * 100) / totalCount, '%');

end.