4 ms·
On second look I think it can be further generalized to N+M nCr M for all grids NxM where N >= M since the number of ways should depend on combinations of the s
by fallingknife 2y ago
On second look I think it can be further generalized to N+M nCr M for all grids NxM where N >= M since the number of ways should depend on combinations of the smaller number.