摘要: Cow Patterns Description A particular subgroup of K (1 <= K <= 25,000) of Farmer John's cows likes to make trouble. When placed in a line, these troub 阅读全文
posted @ 2016-08-07 14:35 konjak魔芋 阅读(468) 评论(0) 推荐(0) 编辑