{"description":"http://projecteuler.net/index.php?section=problems&id=30 Problem 30 \u4f7f\u3046\u6570\u5b57\u3092\u9078\u3093\u3067\u3001\u305d\u306e5\u4e57\u548c\u306e\u6570\u5b57\u3092\u30bd\u30fc\u30c8\u3057\u305f\u3089\u5143\u306b\u623b\u308c\u3070OK\u3002\u6570\u5b57\u306f\u91cd\u8907\u7d44\u5408\u305b\u306b\u306a\u308b\u3002\u3053\u308c\u306f\u7d44\u5408\u305b\u3088\u308a\u5c11\u3057\u30b3\u30fc\u30c9\u304c\u7c21\u5358\u306b\u306a\u308b\u3002 import Data.Listrep_comb a 0 = [[]] rep_comb a n = concat (map (\\m -> (map ([m] ++ ) (rep_comb (filter (\\l -> l >= m) a) (n - 1)))) a)numerize a = foldl (\\x y -> x * 1\u2026","blog_title":"inamori\u2019s diary","width":"100%","url":"https://inamori.hateblo.jp/entry/20100205/p1","author_url":"https://blog.hatena.ne.jp/inamori/","provider_name":"Hatena Blog","published":"2010-02-05 00:00:01","author_name":"inamori","height":"190","image_url":null,"categories":["Haskell"],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20100205%2Fp1\" title=\"Project Euler 30,34 - 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>","type":"rich","version":"1.0","title":"Project Euler 30,34","blog_url":"https://inamori.hateblo.jp/"}