# number of columns n_cols of a 2D binary matrix # where all values are initially 0. # Write a function flip which chooses a 0 value uniformly at random, # changes it to 1, and then returns the ...

# changing all 0s to 1s, and all 1s to 0s. # After making any number of moves, every row of this matrix # is interpreted as a binary number, and the score of the matrix # is the sum of these numbers. ...