{"provider_name":"Hatena Blog","image_url":null,"url":"https://tnakamura.hatenablog.com/entry/2023/10/11/a05","provider_url":"https://hatena.blog","categories":[".NET","C#","\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftnakamura.hatenablog.com%2Fentry%2F2023%2F10%2F11%2Fa05\" title=\"A05 - Three Cards - present\" 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","title":"A05 - Three Cards","description":"atcoder.jp 3\u91cd\u30eb\u30fc\u30d7\u3060\u3068\u6642\u9593\u5207\u308c\u306b\u306a\u308b\u306e\u3067\u30012\u91cd\u30eb\u30fc\u30d7\u3067\u3002 var input = Console.ReadLine()!.Split(' '); var N = int.Parse(input[0]); var K = int.Parse(input[1]); var answer = 0; for (var r = 1; r <= N; r++) { for (var b = 1; b <= N; b++) { var w = K - (r + b); if (w > 0 && w <= N) { answer++; } } } Console.WriteLine(answer\u2026","type":"rich","blog_url":"https://tnakamura.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/griefworker/","version":"1.0","width":"100%","author_name":"griefworker","published":"2023-10-11 19:01:20","blog_title":"present"}