题解 | #蛇形矩阵#

while True:
    try:
        n = int(input())
        start, right, down, m = 1, 2, 1, n
        for i in range(n):
            num, step = start, right
            for _ in range(m):
                print(num, end=' ')
                num += step
                step += 1
            print()
            m -= 1
            start += down
            down += 1
            right += 1
    except:
        break