from random import randint
N=randint(4,9)
matrix = [[randint (1, 9) for j in range (N)] for i in range (N) ]
for row in matrix:
print (row)
transp = list (zip (*matrix))
sorted_transp=[]
for row in transp:
r=sorted(row, reverse = True)
sorted_transp. append (list (r))
sorted_matrix= list (map (list, zip (*sorted_transp)))
print("Матрица после отсортировки:")
for row in sorted_matrix:
print(row)
qwerty = sum(matrix[i][j] for i in range(N) for j in range(N) if i + j >= N and matrix[i][j] % 2 == 0)
print("Сумма четных элементов ниже побочной диагонали:",qwerty)[3, 3, 7, 9, 2, 7] [1, 7, 3, 1, 9, 8] [9, 6, 2, 5, 1, 1] [5, 5, 9, 5, 6, 4] [2, 4, 8, 1, 1, 4] [7, 7, 1, 5, 4, 6] Матрица после отсортировки: [9, 7, 9, 9, 9, 8] [7, 7, 8, 5, 6, 7] [5, 6, 7, 5, 4, 6] [3, 5, 3, 5, 2, 4] [2, 4, 2, 1, 1, 4] [1, 3, 1, 1, 1, 1] Сумма четных элементов ниже побочной диагонали: 40