Take them both. Those subjects are the foundations on which practical and applies computer science and programming are built. Not having a thorough understandi

Take them both. Those subjects are the foundations on which practical and applies computer science and programming are built. Not having a thorough understanding of them is like building a house without an understanding of its foundation. Don't be surprised if your magnificent Swamp Castle burns down, falls over, then sinks into the swamp if you don't know about foundations.