2018年1月21日
Little Elephant and Magic Square
摘要： Little Elephant loves magic squares very much. A magic square is a 3 × 3 table, each cell contains some positive integer. At that the sums of integers 阅读全文
posted @ 2018-01-21 00:22 Lightfall 阅读(203) 评论(0) 推荐(0) 编辑