摘要: 一个涉及有趣的组合问题,最终惊奇地用Abel群解决了。An interesting combinatorics problem, is shockingly solved by abelian group finally. 阅读全文
posted @ 2019-08-12 02:06 XiongRui 阅读(850) 评论(1) 推荐(0) 编辑