program next;
var n,m,c,d:longint;
    f,g:text;
begin
{
assign(f,'next.in');reset(f);
assign(g,'next.out');rewrite(g);
}
writeln('n=');read(n);
writeln('d=');read(d);
c:=n div d;
if n=d then m:=d
       else m:=d*(c+1);
write(m);
{
close(f);
close(g);
}
end.