def printn(n):
    i = n

    if n == 0:
        c = 2
    else:
        c = 3

    while i > 0:
        c -= 1
        i //= 10

    print(' ' * c + str(n), end="")

def rowprint(row, col):
    for i in range(row):
        if i % 2 == 0:
            for j in range(col):
                printn(j + i * col)
        else:
            for j in range(col - 1, -1, - 1):
                printn(j + i * col)
        print()



row, col = map(int, input().split())

rowprint(row, col)