题解 | #蛇形矩阵#
蛇形矩阵
http://www.nowcoder.com/practice/649b210ef44446e3b1cd1be6fa4cab5e
n = int(input())
for i in range(1,n + 1):
for j in range(1,n + 2 - i):
if j == n + 1 - i:
print((i + j - 2)*(i + j - 1)//2 + j)
else:
print((i + j - 2)*(i + j - 1)//2 + j,end=' ')
