{"title":"ABC024 D. \u52d5\u7684\u8a08\u753b\u6cd5","image_url":null,"provider_name":"Hatena Blog","provider_url":"https://hatena.blog","author_name":"phyllo_algo","categories":["\u305d\u306e\u4ed6"],"author_url":"https://blog.hatena.ne.jp/phyllo_algo/","width":"100%","description":"\u554f\u984c 10^8*10^8\u30de\u30b9\u306bmod (10^9+7)\u3092\u53d6\u3063\u305f\u30d1\u30b9\u30ab\u30eb\u306e\u4e09\u89d2\u5f62\u304c\u66f8\u304b\u308c\u3066\u3044\u308b\u3002 \u4eca\u3001(r,c)\u3068(r,c+1)\u3068(r+1,c)\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u6570\u5b57A,B,C\u304c\u305d\u308c\u305e\u308c\u4e0e\u3048\u3089\u308c\u308b\u3002 r\u3068c\u306e\u3046\u3061\u300110^8-1\u672a\u6e80\u3068\u306a\u308br\u3068c\u3067\u3001r\u304c\u6700\u5c0f\u3068\u306a\u308b\u3082\u306e\u3001\u304b\u3064\u3001\u540c\u3058r\u3067\u8907\u6570\u3042\u308b\u5834\u5408\u306fc\u304c\u6700\u5c0f\u3068\u306a\u308b\u3082\u306e\u3092\u8fd4\u305b\u3002 \u7b54\u3048\u306f0 \u8003\u3048\u65b9 (r,c)\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u6570\u5024\u306f(r+c)_C_c mod (10^9+7)\u306e\u5024\u306b\u306a\u3063\u3066\u3044\u308b\u3002 mod\u304c\u7d20\u6570\u3067\u3042\u308b\u306e\u3067+,-,*\u3068\u5272\u308a\u7b97\u306f\u9006\u5143\u3068\u3057\u3066\u56db\u5247\u6f14\u7b97\u304c\u884c\u3048\u3001r,c\u306e2\u3064\u306e\u5909\u6570\u306b\u5bfe\u3057\u3066\u3001\u95a2\u4fc2\u5f0f\u304c2\u3064\u4f5c\u308c\u308b\u306e\u3067\u3001\u9023\u7acb\u65b9\u7a0b\u5f0f\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u95a2\u4fc2\u5f0f\u306f\u3001\u30b3\u30f3\u30d3\u30cd\u30fc\u2026","height":"190","version":"1.0","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fphyllo-algo.hatenadiary.org%2Fentry%2F20150523%2F1432393106\" title=\"ABC024 D. \u52d5\u7684\u8a08\u753b\u6cd5 - \u308c\u3069\u3053\u3060\u76ee\u6307\u3059\u3088\uff01\u3000(\uff1b`\u30fb\u03c9\u30fb\uff09\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://phyllo-algo.hatenadiary.org/","published":"2015-05-23 23:58:26","url":"https://phyllo-algo.hatenadiary.org/entry/20150523/1432393106","blog_title":"\u308c\u3069\u3053\u3060\u76ee\u6307\u3059\u3088\uff01\u3000(\uff1b`\u30fb\u03c9\u30fb\uff09"}