deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 4c0bb75..8b3869d 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
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\subsection{Restatement of the Problem}  The problem is that the Gamma Knife radiosurgery can be inaccurate and when it is inaccurate, it can bear dangerous consequences, namely harming healthy brain tissue.  \verb|tumor_length \usepackage{listings}  \begin{lstlisting}[language=python]  tumor_length  = randint(int(0.1 * matrix.area), int(0.9 * matrix.area))|\n\n\n  \verb|coord matrix.area))  coord  = [randint(1, matrix.m), random.randint(1, matrix.n)]|  \verb|for matrix.n)]  for  i in range(0, matrix.tumor_length):|  \verb| matrix.tumor_length):  direction = randint(1, 4)|  \verb| 4)  if direction == UP:|  \verb| UP:  coord[1] -= 1|  \verb| 1  elif direction == DOWN:|  \verb| DOWN:  coord[1] += 1|  \verb| 1  elif direction == LEFT:|  \verb| LEFT:  coord[0] -= 1|  \verb| 1  elif direction == RIGHT:|  \verb| RIGHT:  coord[0] += 1| 1  \end{lstlisting}