{"version":"1.0","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/y/yokoyantech/20190825/20190825134320.png","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/yokoyantech/","description":"\u306f\u3058\u3081\u306b AtCoder\u306e\u904e\u53bb\u554f\u3092A\u554f\u984c\u304b\u3089\u7a74\u57cb\u3081\u4e2d\u3067\u3059\u3002 \u666e\u901a\u306b\u89e3\u3044\u3066AC\u3060\u3063\u305f\u554f\u984c\u3092\u3001\u3082\u3063\u3068\u77ed\u304f\u30b3\u30fc\u30c9\u66f8\u3051\u306a\u3044\u304b\u3068\u601d\u3044\u3001select\u4f7f\u3063\u305f\u3089WA\u3060\u3063\u305f\u306e\u3067\u30e1\u30e2\u3057\u307e\u3059\u3002 \u89e3\u3044\u305f\u554f\u984c atcoder.jp \u6700\u521d\u306b\u66f8\u3044\u305f\u30b3\u30fc\u30c9(AC) \u3053\u308c\u3067AC\u3060\u3063\u305f\u3093\u3067\u3059\u304c\u3001\u30e2\u30c3\u30b5\u30ea\u3057\u3066\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002 \u7121\u99c4\u304c\u591a\u3044\u3002\u3002 ls = gets.split.map(&:to_i) if ls.uniq.size == 1 puts ls[0] else puts ls.select{|l| ls.count(l) == 1 } end \u30ea\u30d5\u30a1\u30af\u30bf1\u56de\u76ee(WA) \u8981\u7d20\u306e\u6570\u30922\u3067\u5272\u3063\u305f\u4f59\u308a\u304c1\u306e\u8981\u7d20\u3092\u51fa\u3057\u305f\u3089\u3044\u3044\u3058\u3083\u306a\u3044\u2026","categories":["AtCoder","ruby"],"type":"rich","provider_url":"https://hatena.blog","blog_url":"https://www.yokoyan.net/","url":"https://www.yokoyan.net/entry/2019/08/25/134543","width":"100%","title":"\u3010AtCoder ABC027 A\u554f\u984c\u3011select\u3068find\u30e1\u30bd\u30c3\u30c9\u306e\u52d5\u304d\u306e\u9055\u3044\u306b\u3064\u3044\u3066","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.yokoyan.net%2Fentry%2F2019%2F08%2F25%2F134543\" title=\"\u3010AtCoder ABC027 A\u554f\u984c\u3011select\u3068find\u30e1\u30bd\u30c3\u30c9\u306e\u52d5\u304d\u306e\u9055\u3044\u306b\u3064\u3044\u3066 - \u7d19\u4e00\u91cd\u306e\u7a4d\u307f\u91cd\u306d\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","blog_title":"\u7d19\u4e00\u91cd\u306e\u7a4d\u307f\u91cd\u306d","author_name":"yokoyantech","published":"2019-08-25 13:45:43"}