{"blog_title":"rambling talk","height":"190","title":"Google Code Jam 2013 Round 1A","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/nickle/","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnickle.hatenablog.jp%2Fentry%2F20130501%2F1367385768\" title=\"Google Code Jam 2013 Round 1A - rambling talk\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://nickle.hatenablog.jp/entry/20130501/1367385768","blog_url":"https://nickle.hatenablog.jp/","type":"rich","width":"100%","image_url":null,"author_name":"nickle","published":"2013-05-01 14:22:48","description":"\u6bce\u5e74\u6052\u4f8b\u3001\u4eca\u5e74\u3082Google Code Jam\u306b\u53c2\u52a0\u3057\u3066\u3044\u307e\u3059\u3002A-small, A-large, B-small, C-small-1\u3092\u6b63\u89e3\u3002 669\u4f4d\u3067Round 2\u9032\u51fa\u3067\u3059\u3002\u3044\u3064\u3082Round 1C\u307e\u3067\u7c98\u3063\u3066\u8f9b\u3046\u3058\u3066\u901a\u904e\u3057\u3066\u3044\u308b\u306e\u3067\u3001 1A\u3067\u901a\u904e\u3057\u305f\u306e\u306f\u521d\u3081\u3066\u3067\u30c6\u30f3\u30b7\u30e7\u30f3\u304c\u4e0a\u304c\u308a\u307e\u3057\u305f\u3002 A\u554f\u984c\u304c\u5f97\u610f\u5206\u91ce\u3067large\u3092\u901a\u305b\u305f\u306e\u304c\u3088\u304b\u3063\u305f\u3088\u3046\u3067\u3059\u3002 A. Bullseye \u307e\u305a\u306f\u6cd5\u5247\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u30011\u672c\u76ee\u30012\u672c\u76ee\u30013\u672c\u76ee\u2026\u306e\u30ea\u30f3\u30b0\u306e\u9762\u7a4d\u3092\u6c42\u3081\u3066\u307f\u307e\u3059\u3002 1\u672c\u76ee(n=0): \u03c0(r+1)^2 - \u03c0r^2 = \u03c0(2r+1) 2\u672c\u76ee(n=1): \u03c0(r+3)^2 - \u03c0(r+2)^2 = \u03c0(\u2026"}