01 2020 档案

[组合数学]Neither AB nor BA
摘要：题目描述 Find the number of strings s of length N consisting of 'A', 'B', and 'C' that satisfy the following condition:·s can be converted to the empty st 阅读全文
posted @ 2020-01-14 17:27 l..q 阅读(249) 评论(0) 推荐(0)
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posted @ 2020-01-05 23:32 l..q 阅读(32) 评论(0) 推荐(0)