2018年5月17日
[数论][组合数学]Iroha and a Grid
摘要： 题目描述 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 adj 阅读全文
posted @ 2018-05-17 22:20 l..q 阅读(582) 评论(0) 推荐(0)