{"provider_name":"Hatena Blog","author_name":"inamori","type":"rich","title":"AtCoder Beginner Contest 442 D","description":"https://atcoder.jp/contests/abc442/tasks/abc442_d\u7bc4\u56f2\u306e\u548c\u3092\u53d6\u308b\u306b\u306f\u7d2f\u7a4d\u548c\u3092\u8a08\u7b97\u3057\u3066\u304a\u3051\u3070\u3088\u3044\u3067\u3059\u304c\u3001\u96a3\u306e\u5165\u308c\u66ff\u3048\u306f\u7d2f\u7a4d\u548c\u3092\u4e00\u3064\u5909\u3048\u308c\u3070\u3044\u3044\u3060\u3051\u306a\u306e\u3067O(1)\u3067\u3059\u3002 // Swap and Range Sum #![allow(non_snake_case)] //////////////////// library //////////////////// fn read<T: std::str::FromStr>() -> T { let mut line = String::new(); std::io::stdin().read_line\u2026","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F2026%2F01%2F25%2F093314\" title=\"AtCoder Beginner Contest 442 D - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2026-01-25 09:33:14","version":"1.0","image_url":null,"blog_title":"inamori\u2019s diary","blog_url":"https://inamori.hateblo.jp/","author_url":"https://blog.hatena.ne.jp/inamori/","width":"100%","url":"https://inamori.hateblo.jp/entry/2026/01/25/093314","provider_url":"https://hatena.blog","categories":[]}