{"categories":["\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","yukicoder \u30ec\u30d9\u30eb\uff13\u554f\u984c"],"author_url":"https://blog.hatena.ne.jp/babcs2035/","author_name":"babcs2035","blog_url":"https://babcs2035.hateblo.jp/","url":"https://babcs2035.hateblo.jp/entry/2019/03/16/123621","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbabcs2035.hateblo.jp%2Fentry%2F2019%2F03%2F16%2F123621\" title=\"yukicoder\uff1aNo.798 \u30b3\u30ec\u30af\u30b7\u30e7\u30f3 - \u304d\u308d\u304f\" 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","published":"2019-03-16 12:36:21","type":"rich","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/b/babcs2035/20190316/20190316123527.png","description":"\u554f\u984c \u89e3\u6cd5 \u89e3\u7b54 \u554f\u984c yukicoder.me \u89e3\u6cd5 \u5168\u3066\u306e\u5546\u54c1\u3092\u304a\u91d1\u3092\u51fa\u3057\u3066\u8cb7\u3046\u3068\u3059\u308b\u3068\uff0c\u7b54\u3048\u306f (A_1 + A_2 + ... + A_N) + (B_1 * 0 + B_2 * 1 + B_3 * 2 + ... + B_N * (N - 1)) \u3068\u306a\u308b\uff0e\u3053\u306e\u5f0f\u304b\u3089\uff0cB \u304c\u5c0f\u3055\u3044\u9806\u306b\u65e9\u304f\u8cfc\u5165\u3057\u305f\u65b9\u304c\u3088\u3044\u3053\u3068\u304c\u5206\u304b\u308b\uff0e\u306a\u306e\u3067\uff0cB \u304c\u5c0f\u3055\u3044\u9806\u306b\u5546\u54c1\u3092\u898b\u3066\u3044\u304d\uff0c\u5404\u5546\u54c1\u306b\u3064\u3044\u3066\u8cb7\u3046\u304b\u3069\u3046\u304b\u3092 DP \u3067\u6700\u9069\u306a\u89e3\u3092\u898b\u3064\u3051\u308b\uff0e dp(i, j) := (i - 1) \u756a\u76ee\u306e\u5546\u54c1\u307e\u3067\u3092 j \u65e5\u3067\u624b\u306b\u5165\u308c\u305f\u3068\u304d\u306e\u6700\u5c0f\u306e\u91d1\u984d \u3068 DP \u3092\u5b9a\u7fa9\u3059\u308b\uff0e\u9077\u79fb\u306f O(1) \u306a\u306e\u3067\u5168\u4f53\u3067 O(N^2)\uff0e \u89e3\u7b54 y\u2026","title":"yukicoder\uff1aNo.798 \u30b3\u30ec\u30af\u30b7\u30e7\u30f3","blog_title":"\u304d\u308d\u304f","width":"100%","version":"1.0","height":"190","provider_name":"Hatena Blog"}