{"id":4328,"date":"2023-03-19T00:20:01","date_gmt":"2023-03-18T15:20:01","guid":{"rendered":"https:\/\/k.foolslab.net\/dailyreport\/?p=4328"},"modified":"2023-03-19T00:39:25","modified_gmt":"2023-03-18T15:39:25","slug":"2023-3-18","status":"publish","type":"post","link":"https:\/\/k.foolslab.net\/dailyreport\/2023-3-18\/","title":{"rendered":"2023\/3\/18(\u571f)"},"content":{"rendered":"\n

\u30c8\u30e8\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b3\u30f3\u30c6\u30b9\u30c8\u306e\u672c\u9078\u306b\u51fa\u305f\u3002\u7af6\u30d7\u30ed\u3067\u5b9f\u5730\u30a4\u30d9\u30f3\u30c8\u306b\u51fa\u308b\u306e\u306f\u4f55\u306e\u8a87\u5f35\u3082\u7121\u3057\u306b\u521d\u3081\u3066\u306e\u7d4c\u9a13\u3060\u3063\u305f\u306e\u3067\u3081\u3044\u3063\u3071\u3044\u697d\u3057\u3093\u3067\u304d\u305f\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

A: \u9811\u5f35\u3063\u3066\u9577\u65b9\u5f62\u5185\u306e\u7dcf\u548c\u3092\u5f0f\u3067\u8868\u3059\u3002\u9577\u65b9\u5f62\u306e\u5e45\u30fb\u9ad8\u3055\u306fN,M\u3092\u8d85\u3048\u306a\u3044\u306e\u3067\u3001NM\u901a\u308a\u5168\u63a2\u7d22\u3057\u3066\u3057\u307e\u3048\u3070\u3088\u3044\u3002\u5e45\u30fb\u9ad8\u3055\u30fb\u548c\u3092\u56fa\u5b9a\u3059\u308c\u3070\u9069\u5408\u3059\u308b\u5de6\u4e0a\u306e\u5ea7\u6a19\u3092(\u5b58\u5728\u3059\u308b\u306a\u3089)\u8a08\u7b97\u3067\u4e00\u610f\u306b\u51fa\u305b\u308b\u3002\u9069\u5f53\u306a\u5de6\u4e0a\u306e\u5ea7\u6a19\u304c\u5b58\u5728\u3057\u306a\u3044\u306a\u3089\u7121\u3044\u3002\u3053\u306e\u8a08\u7b97\u306f\u5b9a\u6570\u6642\u9593\u3067\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

\u5f0f\u5909\u5f62\u3092\u30df\u30b9\u3057\u307e\u304f\u3063\u3066\u304b\u306a\u308a\u624b\u9593\u53d6\u3063\u3066\u3057\u307e\u3063\u305f\u3002\u3044\u3064\u3082\u8003\u5bdf\u3092\u9032\u3081\u308b\u3068\u304d\u306f\u30d6\u30ec\u30b9\u30c8\u7684\u306b\u3042\u307e\u308a\u6574\u7406\u305b\u305a\u30e1\u30e2\u3092\u53d6\u3063\u3066\u3044\u3063\u3066\u3044\u308b\u306e\u3060\u304c\u3001\u660e\u78ba\u306b\u89e3\u6cd5\u304c\u898b\u3048\u3066\u3044\u308b\u306a\u3089\u3061\u3083\u3093\u3068\u6574\u7406\u3057\u3066\u5f0f\u5909\u5f62\u3092\u30df\u30b9\u3089\u306a\u3044\u3088\u3046\u306b\u8a08\u7b97\u3092\u3059\u3059\u3081\u308b\u3079\u304d\u3002<\/p>\n\n\n\n

\u3042\u3068\u306fWolfram\u306b\u6295\u3052\u308b\u307f\u305f\u3044\u306a\u306e\u3082\u9078\u629e\u80a2\u306b\u5165\u308c\u308b\u3079\u304d\u3060\u3063\u305f\u306a\u3002\u3053\u306e\u5f0f\u3092\u8a08\u7b97\u3059\u308c\u3070\u3044\u3044\u3068\u3044\u3046\u306e\u304c\u5206\u304b\u3063\u3066\u3044\u308b\u306a\u3089Wolfram\u306b\u6295\u3052\u308b\u306e\u304c\u624b\u3063\u53d6\u308a\u65e9\u3044\u3002<\/p>\n\n\n\n

B: \u9806\u5217\u306e\u69cb\u7bc9\u306a\u306e\u3067\u633f\u5165DP\u3068\u304b\u304c\u4e00\u77ac\u30c1\u30e9\u3064\u3044\u305f\u304c\u3001\u5236\u7d04\u304b\u3089\u8003\u3048\u3066\u8caa\u6b32\u6cd5\u306a\u306e\u3067\u8caa\u6b32\u6cd5\u3092\u3057\u305f\u3002\u9811\u5f35\u3063\u3066\u5f0f\u8a08\u7b97\u3059\u308c\u30702\u304b\u6240\u3092\u5165\u308c\u66ff\u3048\u305f\u3068\u304d\u306e\u671f\u5f85\u5024\u306e\u5909\u5316\u304c\u5206\u304b\u308b\u306e\u3067\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066\u30bd\u30fc\u30c8\u3059\u308c\u3070\u3088\u3044\u3002<\/p>\n\n\n\n

C: \u5272\u308a\u7b97\u3068xor\u3068\u3044\u3046\u3042\u307e\u308a\u76f8\u6027\u306e\u826f\u304f\u306a\u3055\u305d\u3046\u306a\u3082\u306e\u306e\u7d44\u307f\u5408\u308f\u305b\u306a\u306e\u3067\u3001\u5168\u63a2\u7d22\u306b\u8fd1\u3044\u3084\u308a\u53e3\u3092\u8003\u3048\u308b\u3002<\/p>\n\n\n\n

A^B\u3092\u56fa\u5b9a\u3057\u3066\u8003\u3048\u308b\u3068\u3001A\u3082B\u3082A^B\u306e\u500d\u6570\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u3002A\u2260B\u3067\u3042\u308b\u3053\u3068\u304b\u3089B-A\u2267A^B\u3067\u3042\u308a\u3001A^B<B-A\u2266R-L\u306a\u306e\u3067A^B\u306fR-L\u4ee5\u4e0b\u3068\u9650\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

A^B\u3092\u56fa\u5b9a\u3057\u305f\u3068\u304d\u3001\u3042\u308a\u5f97\u308bA\u306fL\u4ee5\u4e0aR\u672a\u6e80\u304b\u3064A^B\u306e\u500d\u6570\u306a\u306e\u3067O((R-L)\/(A^B))\u500b\u3002A^B\u3068A\u304c\u6c7a\u307e\u308c\u3070B\u306f\u6c7a\u307e\u308b\u306e\u3067\u305d\u3053\u3067\u6b8b\u308a\u306e\u6761\u4ef6(B\u306fA^B\u306e\u500d\u6570\u3001A<B\u2266R)\u3092\u6e80\u305f\u3059\u304b\u8abf\u3079\u308c\u3070\u3088\u3044\u3002\u8abf\u548c\u7d1a\u6570\u306a\u306e\u3067\u5168\u4f53$O((R-L)\\log (R-L))$\u3067\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

D: \u89e3\u3051\u305a\u3002\u9014\u4e2d\u307e\u3067\u306f\u8003\u5bdf\u304c\u9032\u3093\u3060\u306e\u3060\u304c\u3002<\/p>\n\n\n\n

\u9806\u5217f(a,b)\u306e\u5148\u982d\u304c\u3042\u308b\u6570x(0\u2266x\uff1cN)\u3067\u3042\u308b\u3088\u3046\u306a(a,b)\u306fx\u306b\u95a2\u308f\u3089\u305aN\u500b\u3042\u308b\u3002\u306a\u306e\u3067\u6c42\u3081\u308b\u9806\u5217\u306e\u5148\u982d\u306e\u6570\u306fceil((K-1)\/N)\u3068\u3057\u3066\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n

\u9806\u5217\u306e\u5148\u982d\u304c\u305d\u306e\u6570\u306b\u306a\u308b\u3088\u3046\u306a(a,b)\u306e\u7d44N\u500b\u306f\u5168\u5217\u6319\u3067\u304d\u308b\u306e\u3067f(a,b)\u306e\u8f9e\u66f8\u5f0f\u9806\u5e8f\u3067\u30bd\u30fc\u30c8\u3067\u304d\u308c\u3070\u826f\u3044\u306e\u3060\u304c\u3001\u5b9a\u7fa9\u901a\u308a\u306b\u6bd4\u8f03\u3059\u308b\u3068\u6700\u60aa$O(N)$\u304b\u304b\u3063\u3066\u3057\u307e\u3044\u3001\u30bd\u30fc\u30c8\u306b\u306f$O(N^2\\log N)$\u304b\u304b\u308b\u3002\u3053\u308c\u3067\u306f\u9593\u306b\u5408\u308f\u306a\u3044\u3002\u305d\u306e\u5f8c\u3001\u968e\u5dee\u6570\u5217\u306e\u6700\u9577\u5171\u901a\u63a5\u982d\u8f9e\u3092\u30ed\u30ea\u30cf\u3067\u306b\u3076\u305f\u3093\u3059\u308c\u3070$O(N(\\log N)^2)$\u306b\u843d\u3068\u305b\u308b\u306e\u3067\u306f\u3068\u3044\u3046\u8003\u3048\u304c\u51fa\u305f\u304c\u5b9f\u88c5\u304c\u30d0\u30b0\u3063\u3066\u3044\u308b\u306e\u304b\u901a\u3089\u305a\u3002\u53b3\u3057\u3044\u3002<\/p>\n\n\n\n

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\u7d42\u4e86\u5f8c\u306b\u3044\u308d\u3044\u308d\u30c8\u30fc\u30af\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u304brng\u304b\u3089\u306e\u6311\u6226\u72b6\u3068\u304b\u304c\u3042\u3063\u305f\u3002rng\u304b\u3089\u306e\u6311\u6226\u72b6\u306fTwitter\u60c5\u5831\u306b\u3088\u308c\u3070\u9577\u5bff\u30b3\u30f3\u30c6\u30f3\u30c4\u3089\u3057\u3044\u304c\u904e\u53bb\u306e\u8a18\u9332\u304c\u5168\u304f\u898b\u3064\u304b\u3089\u306a\u3044…\u3059\u306c\u3051\u63a2\u3057\u3068\u304b\u7121\u8336\u82e6\u8336\u306a\u624b\u8a08\u7b97\u554f\u984c\u3068\u304b\u3067\u5927\u7206\u7b11\u3057\u305f\u3002<\/p>\n\n\n\n

AtCoder Problems\u306e\u958b\u767a\u8a71\u3068\u304b\u3082\u805e\u3051\u3066\u306a\u304b\u306a\u304b\u826f\u304b\u3063\u305f\u3002kenkoooo\u3055\u3093\u3059\u3054\u3044\u3002\u958b\u767a\u529b\u3068\u540c\u3058\u304f\u3089\u3044\u306b\u904e\u53bb\u306e\u56f3\u592a\u3044\u30a8\u30d4\u30bd\u30fc\u30c9\u304c\u3059\u3054\u3044\u3002<\/p>\n\n\n\n

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\u61c7\u89aa\u4f1a\u3067\u306f\u672c\u5f53\u306b\u77e5\u3089\u306a\u3044\u4eba\u3060\u3089\u3051\u3060\u3063\u305f\u304c\u3001\u3069\u3046\u306b\u304b\u3057\u3066\u5272\u3068\u3044\u308d\u3093\u306a\u4eba\u3068\u96d1\u8ac7\u3057\u305f\u3002\u8a71\u306e\u30cd\u30bf\u3092\u51fa\u3059\u306e\u306f\u82e6\u624b\u306a\u306e\u3060\u304c\u3001\u3061\u3087\u3063\u3068\u6328\u62f6\u3057\u3066\u81ea\u5df1\u7d39\u4ecb\u3059\u308c\u3070\u7d50\u69cb\u5411\u3053\u3046\u304b\u3089\u8a71\u3092\u3057\u3066\u304f\u308c\u308b\u4eba\u304c\u5c45\u3066\u52a9\u304b\u3063\u305f\u3002<\/p>\n\n\n\n

\u3042\u3068\u7af6\u30d7\u30ed\u30d5\u30ec\u30f3\u30ba\u3055\u3093\u306e\u89e3\u8aac\u3092\u3044\u3064\u3082\u7d50\u69cb\u983c\u308a\u306b\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u898b\u304b\u3051\u305f\u305f\u3081\u611f\u8b1d\u3092\u4f1d\u3048\u306b\u884c\u3063\u305f\u30023\u5e74\u8fd1\u304f\u3082\u524d\u306b\u63cf\u3044\u305f\u30d5\u30a1\u30f3\u30a2\u30fc\u30c8\u4e00\u679a\u3092\u672a\u3060\u306b\u899a\u3048\u3066\u304f\u308c\u3066\u3044\u305f\u306e\u3067\u3081\u3061\u3083\u304f\u3061\u3083\u306b\u5b09\u3057\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30c8\u30e8\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b3\u30f3\u30c6\u30b9\u30c8\u306e\u672c\u9078\u306b\u51fa\u305f\u3002\u7af6\u30d7\u30ed\u3067\u5b9f\u5730\u30a4\u30d9\u30f3\u30c8\u306b\u51fa\u308b\u306e\u306f\u4f55\u306e\u8a87\u5f35\u3082\u7121\u3057\u306b\u521d\u3081\u3066\u306e\u7d4c\u9a13\u3060\u3063\u305f\u306e\u3067\u3081\u3044\u3063\u3071\u3044\u697d\u3057\u3093\u3067\u304d\u305f\u3002 A: \u9811\u5f35\u3063\u3066\u9577\u65b9\u5f62\u5185\u306e\u7dcf\u548c\u3092\u5f0f\u3067\u8868\u3059\u3002\u9577\u65b9\u5f62\u306e\u5e45\u30fb\u9ad8\u3055\u306fN,M\u3092\u8d85\u3048\u306a\u3044\u306e\u3067\u3001N … <\/p>\n

Read more » “2023\/3\/18(\u571f)”<\/span><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4328","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/4328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/comments?post=4328"}],"version-history":[{"count":4,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/4328\/revisions"}],"predecessor-version":[{"id":4333,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/posts\/4328\/revisions\/4333"}],"wp:attachment":[{"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/media?parent=4328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/categories?post=4328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/k.foolslab.net\/dailyreport\/wp-json\/wp\/v2\/tags?post=4328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}