{"id":2048,"date":"2021-12-22T06:28:49","date_gmt":"2021-12-21T21:28:49","guid":{"rendered":"https:\/\/www.roundown.net\/nyushi\/?p=2048"},"modified":"2025-03-14T23:50:39","modified_gmt":"2025-03-14T14:50:39","slug":"htb202101","status":"publish","type":"post","link":"https:\/\/www.roundown.net\/nyushi\/htb202101\/","title":{"rendered":"\u4e00\u6a4b\u59272021\uff1a\u7b2c1\u554f"},"content":{"rendered":"<hr \/>\r\n<p>\\(1000\\) \u4ee5\u4e0b\u306e\u7d20\u6570\u306f \\(250\\) \u500b\u4ee5\u4e0b\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u305b.<\/p>\r\n<hr \/>\r\n<!--more-->\r\n<div class=\"su-row\"><div class=\"su-column su-column-size-3-4\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\r\n<h4>\u3010 \u89e3 \u7b54 \u3011<\/h4>\r\n<p>\\(1000\\) \u4ee5\u4e0b\u306e \\(k\\) \u306e\u500d\u6570\u306e\u500b\u6570\u306f \\(\\left[ \\dfrac{1000}{k} \\right]\\) \u3067\u8868\u305b\u308b.<br \/>\r\n\\(2 , 3 , 5 , 7\\) \u306e\u500d\u6570, \u516c\u500d\u6570\u306e\u500b\u6570\u3092\u8003\u3048\u308b\u3068\r\n\\[\\begin{align}\r\n\\left[ \\dfrac{1000}{2} \\right] & = 500 \\ , \\ \\left[ \\dfrac{1000}{3} \\right] = 333 \\ , \\\\\r\n\\left[ \\dfrac{1000}{5} \\right] & = 200 \\ , \\ \\left[ \\dfrac{1000}{7} \\right] = 142 \\ , \\\\\r\n\\left[ \\dfrac{1000}{6} \\right] & = 166 \\ , \\ \\left[ \\dfrac{1000}{10} \\right] = 100 \\ , \\\\\r\n\\left[ \\dfrac{1000}{14} \\right] & = 71 \\ , \\ \\left[ \\dfrac{1000}{15} \\right] = 66 \\ , \\\\\r\n\\left[ \\dfrac{1000}{21} \\right] & = 47 \\ , \\ \\left[ \\dfrac{1000}{35} \\right] = 28 \\ , \\\\\r\n\\left[ \\dfrac{1000}{30} \\right] & = 33 \\ , \\ \\left[ \\dfrac{1000}{42} \\right] = 23 \\ , \\\\\r\n\\left[ \\dfrac{1000}{70} \\right] & = 14 \\ , \\ \\left[ \\dfrac{1000}{105} \\right] = 9 \\ , \\\\\r\n\\left[ \\dfrac{1000}{210} \\right] & = 4\r\n\\end{align}\\]\r\n\u306a\u306e\u3067, \\(2 , 3 , 5 , 7\\) \u306e\u3044\u305a\u308c\u304b\u306e\u500d\u6570\u3067\u3042\u308b \\(1000\\) \u4ee5\u4e0b\u306e\u6574\u6570\u306e\u500b\u6570\u306f\r\n\\[\\begin{align}\r\n500 & +333 +200 +142 \\\\\r\n& \\qquad -166 -100 -71 -66 -47 -28 \\\\\r\n& \\qquad +33 +23 +14 +9 -4 \\\\\r\n& = 1175 -478 +79 -4 \\\\\r\n& = 772\r\n\\end{align}\\]\r\n\u3053\u308c\u306b\u306f\u7d20\u6570\u304c \\(4\\) \u500b\u542b\u307e\u308c\u3066\u3044\u308b\u306e\u3067, \\(1000\\) \u4ee5\u4e0b\u306e\u7d20\u6570\u306e\u500b\u6570 \\(N\\) \u306f\r\n\\[\\begin{align}\r\nN & \\lt 1000 -( 772 -4 ) \\\\\r\n& = 232 \\lt 250\r\n\\end{align}\\]\r\n\u3088\u3063\u3066, \u984c\u610f\u306f\u793a\u3055\u308c\u305f.<\/p>\r\n<\/div><\/div>\r\n<div class=\"su-column su-column-size-1-4\"><div class=\"su-column-inner su-u-clearfix su-u-trim\">\r\n<h4>\u3010 \u30b3\u30e1\u30f3\u30c8 \u3011<\/h4>\r\n\r\n<\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"\\(1000\\) \u4ee5\u4e0b\u306e\u7d20\u6570\u306f \\(250\\) \u500b\u4ee5\u4e0b\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u305b.","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[181],"tags":[146,165],"class_list":["post-2048","post","type-post","status-publish","format-standard","hentry","category-hitotsubashi_2021","tag-hitotsubashi","tag-165"],"_links":{"self":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/2048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/comments?post=2048"}],"version-history":[{"count":0,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/posts\/2048\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/media?parent=2048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/categories?post=2048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.roundown.net\/nyushi\/wp-json\/wp\/v2\/tags?post=2048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}