{"provider_url":"https://hatena.blog","width":"100%","blog_url":"https://bondo.hateblo.jp/","description":"ABC\u53c2\u52a0\u8a18\u4e8b\u3059\u3054\u304f\u4e45\u3057\u3076\u308a 4\u5b8c\u8d85\u9045\u89e3\u304d\u3067\u51b7\u3048\uff01\u60b2\u3057\u3044\u306d\u524d\u56deABC\u3067\u6c34\u30bf\u30c3\u30c1\u51fa\u6765\u3066\u3066\u3088\u304b\u3063\u305f\uff08\uff1f\uff09 A - Curtain \u3053\u308c\u3061\u3087\u3063\u3068\u96e3\u3057\u304f\u306a\u3044\uff1f\u554f\u984c\u6587\u7406\u89e3\u306b\u6642\u9593\u304b\u304b\u3063\u3061\u3083\u3063\u305f \u6700\u5927\u30672B\u8986\u3048\u308b\u306e\u3067A\u304b\u3089\u5f15\u304f\u3068\u7b54\u3048\u306a\u306e\u3067max(0,A - 2B) \u63d0\u51fa\u30b3\u30fc\u30c9 int main(){ cin.tie(0); ios::sync_with_stdio(false); int A, B; cin >> A >> B; cout << max(0, A - 2 * B) << endl; } B - TAKOYAKI FESTIVAL 2019 \u554f\u984c\u6587\u306b\u3061\u3087\u3063\u3068\u5a01\u5727\u3055\u308c\u307e\u3059\u304c\u3001\u5236\u7d04\u304c\u5c0f\u3055\u3044\u306e\u3067\u5168\u901a\u2026","blog_title":"\u63a5\u7740\u5264\u306e\u7cbe\u9032\u65e5\u8a18","provider_name":"Hatena Blog","image_url":"https://chart.apis.google.com/chart?cht=tx&chl=N%5E3","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbondo.hateblo.jp%2Fentry%2F2019%2F10%2F21%2F010041\" title=\"AtCoder Beginner Contest 143 \uff08ABC143\uff09 - \u63a5\u7740\u5264\u306e\u7cbe\u9032\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"AtCoder Beginner Contest 143 \uff08ABC143\uff09","url":"https://bondo.hateblo.jp/entry/2019/10/21/010041","type":"rich","author_name":"tkm-kyudo","published":"2019-10-21 01:00:41","author_url":"https://blog.hatena.ne.jp/tkm-kyudo/","version":"1.0","categories":["AtCoder","AtCoderBeginnerContest","ABC","ABC143"],"height":"190"}