{"author_url":"https://blog.hatena.ne.jp/inamori/","width":"100%","height":"190","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20100413%2Fp1\" title=\"Project Euler 20 - 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":"2010-04-13 00:00:01","provider_url":"https://hatena.blog","blog_url":"https://inamori.hateblo.jp/","categories":["PE","C++"],"blog_title":"inamori\u2019s diary","title":"Project Euler 20","provider_name":"Hatena Blog","description":"http://projecteuler.net/index.php?section=problems&id=20 \u3053\u308c\u3082\u524d\u306b\u3067\u4f5c\u3063\u305f\u591a\u500d\u9577\u6574\u6570\u30af\u30e9\u30b9\u3092\u4f7f\u3048\u3070\u7c21\u5358\u3002\u639b\u3051\u7b97\u306f\u8db3\u3057\u7b97\u3092\u7e70\u308a\u8fd4\u3059\u3060\u3051\u3002\u305f\u3060\u3057\u3001\u5358\u7d14\u306b\u8db3\u3059\u3060\u3051\u3060\u3068\u82b8\u304c\u306a\u3044\u306e\u3067\u30d0\u30a4\u30ca\u30ea\u6cd5\u3092\u4f7f\u3063\u305f\u3002 #include <iostream> #include \"itertools.h\" #include \"longint.h\" using namespace std; using namespace itertools; longint mul(longint n, int m) { if(m == 0) return 0; longint p\u2026","author_name":"inamori","type":"rich","image_url":null,"url":"https://inamori.hateblo.jp/entry/20100413/p1"}