This is another very simple problem. Basically, starting from $x = 0$, you will perform a series of increment or decrement operations then report the final value of $x$. Reading the problem, you can see that all you need to do is look for the presence of either $\t{-}$ or $\t{+}$ and do a decrement or increment, respectively.
It's very common for problem statements to have a story associated with them. Sometimes you read through an entire page of text before you realize what the hell it wants you to do.😉