14.py

a, b = int(input()), int(input())

lenn = len(str(a * b))

for i in range(1, a + 1):
    arr = []
    if i % 2 == 1:
        for j in range(1, b + 1):
            n = b * (i - 1) + j
            arr.append(" " * (lenn - len(str(n))) + str(n))
    else:
        for j in range(b, 0, -1):
            n = b * (i - 1) + j
            arr.append(" " * (lenn - len(str(n))) + str(n))
    print(*arr)