{"description":"a,b = 1,1 sum = 0 while b<=4000000 sum += b if b%2==0 a,b = b,a+b end p sum","blog_title":"\u7c21\u6f54\u306aQ","url":"https://qnighy.hatenablog.com/entry/20090209/1234183471","width":"100%","image_url":null,"author_name":"qnighy","provider_url":"https://hatena.blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/qnighy/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fqnighy.hatenablog.com%2Fentry%2F20090209%2F1234183471\" title=\"ProjectEuler 2 Ruby - \u7c21\u6f54\u306aQ\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"ProjectEuler 2 Ruby","blog_url":"https://qnighy.hatenablog.com/","type":"rich","categories":["Programming","ProjectEuler","Ruby"],"height":"190","published":"2009-02-09 21:44:31","provider_name":"Hatena Blog"}