题解 | #蛇形矩阵#
蛇形矩阵
http://www.nowcoder.com/practice/649b210ef44446e3b1cd1be6fa4cab5e
n = int(input())
res = [[] for _ in range(n)]
k = 1
for i in range(n):
for j in range(i, -1, -1):
res[j].append(k)
k += 1
for i in range(n):
print(*res[i])
