from random import randint
n = int(input('n: '))
m = int(input('m: '))

def matrix(n, m):
    a = [[randint(-50, 50) for j in range(m)]for i in range(n)]

    for i in range(len(a)):
        for j in range(len(a[0])):
            print('%3d' % (a[i][j]), end=" ")
        print()

    for i in range(len(a)):
        maxN = abs(a[i][0])
        maxI = 0
        for j in range(1, len(a[i])):
            if maxN < abs(a[i][j]):
                maxN = abs(a[i][j])
                maxI = j
        print(a[i][maxI])
        a[i][maxI] = -1

    for i in range(0,len(a),2):
        for j in range(len(a[0])):
            print('%3d' % (a[i][j]), end=" ")
        print()
    print('-'*30)
    for i in range(len(a)):
        for j in range(len(a[0])):
            if j%2!=0:
                print('%3d' % (a[n-1-i][j]), end=" ")
            else:
                print('%3d' % (a[i][j]), end=" ")
        print()

matrix(n,m)