2017年3月1日
kattis - Prime Spiral
摘要： Boredom can be good for creativity. Polish mathematician Stanislaw Ulam (1909-1984) discovered the eponymous Ulam spiral while listening to a “long and very boring paper”. He started by writing down t... 阅读全文
posted @ 2017-03-01 20:16 duskcloudxu 阅读(625) 评论(0) 推荐(0)