{"title":"Codeforces #1104 : E. Permutation Commutation","description":"\u672c\u756a\u4e2d\u306b\u89e3\u3051\u305a\u3058\u307e\u3044\u2026\u3002 https://codeforces.com/contest/2237/problem/E","author_url":"https://blog.hatena.ne.jp/kmjp/","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkmjp.hatenablog.jp%2Fentry%2F2026%2F06%2F22%2F0900\" title=\"Codeforces #1104 : E. Permutation Commutation - 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>","published":"2026-06-22 09:00:00","categories":["Codeforces"],"image_url":null,"height":"190","url":"https://kmjp.hatenablog.jp/entry/2026/06/22/0900","author_name":"kmjp","provider_name":"Hatena Blog","type":"rich","blog_title":"kmjp's blog","version":"1.0","blog_url":"https://kmjp.hatenablog.jp/","provider_url":"https://hatena.blog"}