{"image_url":null,"author_url":"https://blog.hatena.ne.jp/kmjp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkmjp.hatenablog.jp%2Fentry%2F2020%2F12%2F10%2F0900\" title=\"Codeforces ECR #086 : E. Placing Rooks - kmjp&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","url":"https://kmjp.hatenablog.jp/entry/2020/12/10/0900","blog_url":"https://kmjp.hatenablog.jp/","published":"2020-12-10 09:00:00","author_name":"kmjp","categories":["Codeforces"],"type":"rich","description":"E\u306f\u96e3\u3057\u304f\u306a\u3044\u3002 http://codeforces.com/contest/1342/problem/E","width":"100%","blog_title":"kmjp's blog","height":"190","version":"1.0","title":"Codeforces ECR #086 : E. Placing Rooks"}