{"type":"rich","categories":["\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"image_url":null,"blog_url":"https://blog.hamayanhamayan.com/","author_url":"https://blog.hatena.ne.jp/hamayanhamayan/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.hamayanhamayan.com%2Fentry%2F2018%2F08%2F04%2F101412\" title=\"2\u3064\u306e\u6570\u306e\u548c [yukicoder No.723] - \u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","blog_title":"\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093","provider_name":"Hatena Blog","version":"1.0","height":"190","description":"https://yukicoder.me/problems/no/723 \u89e3\u6cd5 https://yukicoder.me/submissions/276742\u3053\u3046\u3044\u3046\u6570\u3048\u4e0a\u3052\u554f\u984c\u306e\u3088\u304f\u3042\u308b\u624b\u6cd5\u3092\u4f7f\u3046\u3002 \u3042\u308b\u6761\u4ef6\u3092\u6e80\u305f\u3059\u9805\u76ee\u6570\u3092\u524d\u8a08\u7b97\u3057\u3066\u304a\u304f\u3068\u3044\u3046\u30c6\u30af\u3002 \u4eca\u56de\u306fcnt[a] := A[i]=a\u3092\u6e80\u305f\u3059\u9805\u76ee\u6570\u3092\u524d\u8a08\u7b97\u3057\u3066\u304a\u304f\u3002 \u6761\u4ef6\u3092\u6e80\u305f\u3059\u7d44(i,j)\u3092\u8003\u3048\u308b\u304c\u3001i\u3092\u56fa\u5b9a\u3059\u308b\u3068\u3001j\u306e\u65b9\u3067\u6e80\u305f\u3059\u3079\u304d\u6761\u4ef6\u306fA[j] = X - A[i]\u3067\u3042\u308b\u3002 \u3088\u3063\u3066\u3001i\u3092\u56fa\u5b9a\u3057\u305f\u3068\u304d\u306ej\u306e\u7d44\u307f\u5408\u308f\u305b\u6570\u306fcnt[X-A[i]]\u3068\u306a\u308b\u3002 X-A[i]\u304c0\u4ee5\u4e0a10^5\u4ee5\u4e0b\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u306a\u3044\u3068\u3001\u914d\u5217\u5916\u53c2\u7167\u3068\u306a\u308b\u306e\u3067\u5b9f\u88c5\u2026","url":"https://blog.hamayanhamayan.com/entry/2018/08/04/101412","title":"2\u3064\u306e\u6570\u306e\u548c [yukicoder No.723]","width":"100%","author_name":"hamayanhamayan","published":"2018-08-04 10:14:12"}