Good Binary Strings

You are given a binary string $S$. A binary string is a string consisting of only $0$'s and $1$'s. A binary string is called *good* if it has an equal number of occurrences of $\texttt{01}$ substrings and $\texttt{10}$ substrings. Note that these substrings may overlap. For example, the string $1101001$ is *good* since there are two occurrences of $\texttt{01}$ ($11\underline{01}001$ and $11010\u