Metabolism of different saccharides
If you can digest (break down) the polysaccharides to useable monosaccharides, then they can be incorporated into glycolysis (or some other metabolic pathway!). The metabolic pathways around glycolysis are complex, but here is a representation of some of them:

As you can see in, in the top right corner, sucrose/starch, but also other sugars like nucleosides, can enter the overall simple sugar metabolic pathways. How and what exactly happens to the complex sugars will depend on how they are broken down (if they can be broken down at all) and they will have their own more or less complex metabolic pathways associated with that.