A flooded basement will cause several problems to your walls and floor, wether they are very serious or just simple minor problems. Some serious repairs may be costly and time consuming so thats why waterproofing your basement is essential.
A heaved floor is a floor that has not returned to its original level or is badly cracked. If this is the case, a new floor may be needed.
Both floors and walls may need to be sanitized. When cleaning make sure you wear gloves and any other appropriate protection to prevent harming yourself.