即将离开知乎
您即将离开知乎,请注意您的帐号和财产安全。
https://www.lintcode.com/problem/number-of-ways-to-stay-in-the-same-place-after-some-steps-i/?utm_source=sc-zhihuzl-zyq0918
您即将离开知乎,请注意您的帐号和财产安全。
https://www.lintcode.com/problem/number-of-ways-to-stay-in-the-same-place-after-some-steps-i/?utm_source=sc-zhihuzl-zyq0918