摘要: 题目描述 Old MacDonald has a farm and a large potato field, \((10^{10}+1)\times(10^{10}+1)\) square meters in size. The field is divided into square garde 阅读全文
posted @ 2021-01-30 11:33 lrj124 阅读(109) 评论(0) 推荐(0) 编辑