1.txt

来自「pl0」· 文本 代码 · 共 18 行

const z=10;
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.