program gls;
var

a,b,c,d,e:longint;
f,g:text;
begin
   assign(f,'cost.in');
   reset(f);
   assign(g,'cost.out');
   rewrite(g);
   readln(f,a,b,c,d,e);
   writeln(g,'-1');








close(g);close(f);
end.