program zzn;
type
        rec=record
        w,v,t:longint;
        end;
var
        f:array[0..1000,0..100]of longint;
        k,h,n,x,y,i,j:longint;
        data:array[1..1000]of rec;
procedure init;
begin
        assign(input,'shop.in');
        reset(input);
        assign(output,'shop.out');
        rewrite(output);
        readln(n,x,y);
        j:=0;
        for i:=1 to n do
         begin
             inc(j);
             readln(data[j].w,data[j].v,data[j].t,h);
             inc(j);
             data[j].w:=data[j-1].w*h;
             data[j].v:=data[j-1].v*h;
             data[j].t:=data[j-1].t*h;
         end;
end;
procedure closef;
begin
        close(input);
        close(output);
end;
procedure main;
begin
        fillchar(f,sizeof(f),0);
        n:=n*2;
        for i:=1 to n do
          for j:=x downto data[i].w do
           for k:=y downto data[i].v do
            if f[j,k]<f[j-data[i].w,k-data[i].v]+data[i].t then
             f[j,k]:=f[j-data[i].w,k-data[i].v]+data[i].t;
        writeln(f[x,y]);

end;
begin
        init;
        main;
        closef;
end.