test7.pl

包含“源代码”“文档”“可执行文件（例子）”三个文件夹

const z=0;
var head,foot,cock,rabbit,n;
begin
   n:=z;
   read(head,foot);
   cock:=1;
   while cock <= head do
   begin
      rabbit:=head - cock;
      if cock * 2+rabbit * 4 = foot then
      begin
         write(cock,rabbit);
         n := n+1
      end;
      cock := cock + 1;
   end;
   if n=0 then write(0,0)
end.