The given code starts by initializing some sets and functions f$,$ g$,$ and h$.$

Block $1$ is a function $($called hasInverse$)$ that takes as input another function $($called func$),$ and two sets $($D and T$).$ The function hasInverse returns true if the function func with domain D and target T has a valid inverse. Follow the instructions in the comments to print additional information when function func does not have a valid inverse.

The next set of lines call the function hasInverse with combinations of function, domain, and target.

You should complete the code in Block $2$ for a function $($called inverse$)$ that returns the value of the inverse of the function on the given input. The function inverse tests whether the function func has a valid inverse and whether the input is in the target. For example, a call to inverse$($f$,$ Bin$4$Even, Bin$3,\text{'}011\text{'})$ should return the string $\text{'}0011\text{'}.$

The next set of lines call the function inverse with various inputs.

Read the comments in the code carefully, as they describe how the given code works in detail.