  The multidimensional cosmological model describing the evolution of $n$
Einstein spaces in the presence of multicomponent perfect fluid is considered.
When certain restrictions on the parameters of the model are imposed, the
dynamics of the model near the singularity is reduced to a billiard on the
$(n-1)$-dimensional Lobachevsky space $H^{n-1}$. The geometrical criterion for
the finiteness of the billiard volume and its compactness is suggested. This
criterion reduces the problem to the problem of illumination of
$(n-2)$-dimensional sphere $S^{n-2}$ by point-like sources. Some generalization
of the considered scheme (including scalar field and quantum generalizations)
are considered.
