a, b = int(input()), int(input()) lenn = len(str(a * b)) for i in range(1, a + 1): arr = [] for j in range(1, b + 1): if j % 2 == 1: n = a * (j - 1) + i arr.append(" " * (lenn - len(str(n))) + str(n)) else: n = a * (j) - (i - 1) arr.append(" " * (lenn - len(str(n))) + str(n)) print(*arr)