“码蹄集”平台构造原理（Python版本）

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spdf = ['1s', '2s', '2p', '3s', '3p', '4s', '3d', '4p', '5s', '4d', '5p', '6s', '4f', '5d', '6p', '7s', '5f', '6d',
        '7p', '8s']
nums = [2, 2, 6, 2, 6, 2, 10, 6, 2, 10, 6, 2, 14, 10, 6, 2, 14, 10, 6, 2]
levels = [1, 2, 2, 3, 3, 4, 3, 4, 5, 4, 5, 6, 4, 5, 6, 7, 5, 6, 7, 8]
n = int(input())
result = [[] for i in range(9)]  # 9行，第1行不用，便于对齐
# level和num分别用于控制对levels和nums的遍历顺序
level = 0
num = 0
while n > 0:
    if n > nums[num]:
        nu = nums[num]
    else:
        nu = n
    n -= nums[level]
    result[levels[level]].append(spdf[level] + str(nu))
    level = level + 1
    num = num + 1
# 只打印有数据的层
m = max(levels[:level])
for i in range(1, m + 1):
    print(*result[i])