N,M = list(map(int,input().split()))
boxes = [list(map(int,input().split())) for _ in range(N)]
totals = [sum([boxes[j][i] for j in range(N)]) for i in range(M)]
values = [sum([boxes[i][j]*totals[j] for j in range(M)]) for i in range(N)]
values.sort()
print(sum([values[i] * (-1)**(i+1) for i in range(N)]))