随笔分类 -  数论--组合数取模

组合数取模
摘要：We have a large square grid with H rows and W columns. Iroha is now standing in the top-left cell. She will repeat going right or down to the adjacent 阅读全文
posted @ 2017-03-02 22:50 贱人方 阅读(398) 评论(0) 推荐(0)