{"author_url":"https://blog.hatena.ne.jp/kmjp/","url":"https://kmjp.hatenablog.jp/entry/2014/11/20/0930","type":"rich","published":"2014-11-20 09:30:00","provider_url":"https://hatena.blog","version":"1.0","blog_url":"https://kmjp.hatenablog.jp/","provider_name":"Hatena Blog","height":"190","width":"100%","image_url":null,"categories":["Codeforces"],"blog_title":"kmjp's blog","author_name":"kmjp","description":"E\u3088\u308a\u7c21\u5358\u3002 http://codeforces.com/contest/489/problem/F","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkmjp.hatenablog.jp%2Fentry%2F2014%2F11%2F20%2F0930\" title=\"Codeforces #277.5 Div2 F. Special Matrices - 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>","title":"Codeforces #277.5 Div2 F. Special Matrices"}