{"image_url":null,"type":"rich","version":"1.0","blog_url":"https://kmjp.hatenablog.jp/","url":"https://kmjp.hatenablog.jp/entry/2026/01/12/0900","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkmjp.hatenablog.jp%2Fentry%2F2026%2F01%2F12%2F0900\" title=\"AtCoder ARC #212 : D - Two Rooms - 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>","height":"190","published":"2026-01-12 09:00:00","author_url":"https://blog.hatena.ne.jp/kmjp/","width":"100%","title":"AtCoder ARC #212 : D - Two Rooms","categories":["ARC"],"provider_name":"Hatena Blog","author_name":"kmjp","provider_url":"https://hatena.blog","blog_title":"kmjp's blog","description":"\u3061\u3087\u3063\u3068\u624b\u9593\u53d6\u3063\u305f\u3051\u3069\u89e3\u3051\u3066\u826f\u304b\u3063\u305f\u3002 https://atcoder.jp/contests/arc212/tasks/arc212_d"}