{"height":"190","description":"\u554f\u984c codeforces.com \u89e3\u6cd5 \u30a2\u30a4\u30c7\u30a2\u3060\u3051\u306a\u3089\u5927\u5b66\u53d7\u9a13\u306e\u5178\u578b\u3067\u3059\u306d(\u624b\u8a08\u7b97\u3067\u3068\u3051\u308b\u304b\u306f\u7f6e\u3044\u3066\u304a\u3044\u3066)2 \u3064\u306e\u5186\u306e\u534a\u5f84\u3092 r, R (r R+r R-r >= d \u306a\u3089, \u5186 r \u306f \u5186 R \u306b\u5b8c\u5168\u306b\u542b\u307e\u308c\u308b\u306e\u3067, \u7b54\u3048\u306f pi*r^2 \u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f, \u8fba\u306e\u9577\u3055\u304c\u305d\u308c\u305e\u308c R, r, d \u306e\u4e09\u89d2\u5f62\u304c\u4e2d\u306b\u51fa\u6765\u3066, \u8fba r \u306b\u5bfe\u3059\u308b\u89d2\u5ea6 phi \u3068, \u8fba R \u306b\u5bfe\u3059\u308b\u89d2\u5ea6 theta \u304c, \u4f59\u5f26\u5b9a\u7406\u306b\u3088\u3063\u3066\u308f\u304b\u308a\u307e\u3059\u3002\u3053\u308c\u304c\u5206\u304b\u308c\u3070, \u4ea4\u308f\u3063\u3066\u3044\u308b\u90e8\u5206\u306e\u9762\u7a4d\u306f, \uff12\u3064\u306e\u300c\u6247\u578b - \u4e09\u89d2\u5f62\u300d\u306e\u5f62\u3067\u66f8\u3051\u308b\u306e\u3067, \u9762\u7a4d\u3092\u6c42\u3081\u3089\u308c\u307e\u3059\u3002 Real add(Real a, Real b) { \u2026","blog_title":"mayoko\u2019s diary","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmayokoex.hatenablog.com%2Fentry%2F2016%2F02%2F10%2F192634\" title=\"Educational Codeforces Round 2 D. Area of Two Circles&#39; Intersection - mayoko\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>","author_name":"mayokoex","type":"rich","published":"2016-02-10 19:26:34","categories":["CodeForces"],"width":"100%","title":"Educational Codeforces Round 2 D. Area of Two Circles' Intersection","blog_url":"https://mayokoex.hatenablog.com/","version":"1.0","image_url":null,"provider_name":"Hatena Blog","provider_url":"https://hatena.blog","url":"https://mayokoex.hatenablog.com/entry/2016/02/10/192634","author_url":"https://blog.hatena.ne.jp/mayokoex/"}