program shop;
var
  data:array [1..300] of record
    w,v,t,h:longint;
  end;
  f:array [0..1000,0..100] of longint;
  cut:array [1..100000] of record
    x,y:longint;
  end;
  value,a1,b1,a2,b2,top,i,j,n,x,y:longint;
begin
  fillchar (f,sizeof(f),$FF);
  fillchar (data,sizeof(data),0);
  fillchar (cut,sizeof(cut),0);
  assign (input,'shop.in');
  reset (input);
  readln (n,x,y);
  for i:=1 to n do with data[i] do readln (w,v,t,h);
  close (input);
  assign (output,'shop.out');
  rewrite (output);
  top:=1;cut[top].x:=0;cut[top].y:=0;
  f[0,0]:=0;
  for i:=1 to n do begin
    for j:=1 to top do begin
	  a1:=cut[j].x+data[i].w;b1:=cut[j].y+data[i].v;
	  a2:=cut[j].x+data[i].w*data[i].h;b2:=cut[j].y+data[i].v*data[i].h;
	  if (a1<=x) and (b1<=y) then begin
	    value:=f[cut[j].x,cut[j].y]+data[i].t;
	    if f[a1,b1]=-1 then begin
		  inc (top);
		  cut[top].x:=a1;cut[top].y:=b1;
		  f[a1,b1]:=value;
		end
		else if value>f[a1,b1] then f[a1,b1]:=value;
	  end;
	  if (a2<=x) and (b2<=y) then begin
	    value:=f[cut[j].x,cut[j].y]+data[i].t*data[i].h;
		if f[a2,b2]=-1 then begin
		  inc(top);
		  cut[top].x:=a2;cut[top].y:=b2;
		  f[a2,b2]:=value;
		end
		else if value>f[a2,b2] then f[a2,b2]:=value;
	  end;
	end;
  end;
  writeln (f[x,y]);
  close (output);
end.