def cow(n):
    # 初始化
    n_cows = [0 for i in range(1,11)]
    n_cows[0] = 1
    # 开始生产
    for year in range(n-1):
      n_cows[1:] = n_cows[:-1]
      n_cows[0] = sum(n_cows[2:7])
print(sum(n_cows))

母牛生产问题