题解 | #蛇形矩阵#

n = int(input().strip())

o = []

for i in range(n):
    temp = [0] * (n - i)
    if i == 0:
        temp[0] = 1
    else:
        temp[0] = o[i - 1][0] + i
    step = i + 2
    for j in range(1, len(temp)):
         temp[j] = temp[j - 1]+step
         step += 1
    
    o.append(temp)

for t in o:
    for i in range(len(t)):
        if i != len(t) - 1:
            print(t[i], end=' ')
        else:
            print(t[i])