contents of the txt file are shown below thank you!!!

how would i change the size of the matrix tje file is reading in?

Description Write a python program to read in a matrix, and compute the inverse. Write the original matrix and results to a file hw3_out.txt. The input files have the matrix size as the first line. (A single number, the matrixs are square), and then one entry per line. for a 4 x 4 matrix, the first line would be 4, and the next 4 lines are the first row, the next 4 lines are the second row, etc. 2:37