program next;
var n,m,d:longint;
    c:byte;
    f,g:text;
begin
assign(f,'next.in');reset(f);
assign(g,'next.out');rewrite(g);
write('n=');read(f,n);
write('d=');read(f,d);
c:=n mod d;
m:=n+d-c;
write(g,m);
close(f);
close(g);
end.