{"id":376,"date":"2010-09-18T01:20:00","date_gmt":"2010-09-17T17:20:00","guid":{"rendered":"http:\/\/localhost\/?p=376"},"modified":"2010-09-18T01:20:00","modified_gmt":"2010-09-17T17:20:00","slug":"codeforces28","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=376","title":{"rendered":"codeforces#28"},"content":{"rendered":"\n<p>\u8fd9\u6b21\u7684A\u9898\u9898\u610f\u975e\u5e38\u4e0d\u6e05\u695a\u3002\u3002\u3002<br \/>\u770b\u5f97\u6211\u7d2f\u6b7b\u56e7\u3002\u3002\u3002\u3002<br \/>\u72b6\u6001\u4e0d\u662f\u5f88\u597d\u3002\u3002\u3002\u5f04\u5b8c\u4e86ABC\u4e4b\u540e\u8fd8\u6709\u70b9\u65f6\u95f4\u53ef\u4ee5\u505aD\u3002\u3002<br \/>\u8981\u5199\u7ebf\u6bb5\u6811\u795e\u9a6c\u7684\u975e\u5e38\u7e41\u7410\u3002\u3002\u597d\u4e0d\u5bb9\u6613\u5feb\u5199\u5b8c\u4e86\u53d1\u73b0\u4e00\u4e9b\u95ee\u9898\u3002\u3002\u3002\u5bfc\u81f4\u6ca1\u6765\u7684\u53ca\u56e7\u3002\u3002\u3002<br \/>A<br \/>\u9996\u5148\u9898\u76ee\u4e2d\u5df2\u7ecf\u8bf4\u4e86\u3002\u3002\u3002\u8fd9\u4e2a\u56fe\u5f62\u662f\u56fa\u5b9a\u7684\u3002\u3002\u7136\u540e\u9700\u8981\u679a\u4e3e\u662f\u5728\u5947\u6570\u4f4d\u8fd8\u662f\u5728\u5076\u6570\u4f4d\u653erod\uff0c<br \/>\u90a3\u4e48\u5c31\u53d8\u6210\u4e00\u4e2a\u4e8c\u5206\u56fe\u5339\u914d\u95ee\u9898\u4e86\u3002\u3002\u3002<br \/>B<br \/>\u3002\u3002\u3002\u628a\u53ef\u4ee5\u4e92\u76f8\u4ea4\u6362\u7684\u4f4d\u7f6e\u7528\u65e0\u5411\u8fb9\u8fde\u8d77\u6765\u3002\u3002\u53ea\u9700\u8981\u5224\u65ad\u6bcf\u4e2a\u70b9\u8ddf\u5b83\u7684\u76ee\u7684\u5730\u662f\u5426\u53ef\u8fbe\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002C<br \/>\u8fd9\u4e2a\u9898\u76ee\u633a\u597d\u73a9\u7684\u3002\u3002\u679a\u4e3e\u6700\u5927\u503c\u518d\u52a8\u6001\u89c4\u5212\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002\u3002<br \/>\u8bbeF\uff08k\uff09\u4e3a\u6700\u5927\u65f6\u95f4\u5c0f\u4e8ek\u7684\u6982\u7387\u3002\u3002Dp\u51faF\uff08k\uff09\u4e4b\u540e<br \/>Sum(( F(i+1)-F(i) )*i)\u5c31\u662f\u7b54\u6848\u4e86\u3002\u3002\u3002<br \/>D<br \/>\u770b\u9519\u4e86\u9898\u76ee\u3002\u3002\u3002\u53c8\u9519\u8bef\u7406\u89e3\u4e86\u6837\u4f8b\u3002\u3002\u3002<br \/>\u5bfc\u81f4\u82b1\u4e86N\u957f\u65f6\u95f4\u5199\u7ebf\u6bb5\u6811\u3002\u3002\u3002<br \/>\u6211\u662f\u5927\u50bb\u53c9\u3002\u3002\u3002\u3002<br \/>\u6700\u540e\u7b2c23\u56e7\u3002\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u6b21\u7684A\u9898\u9898\u610f\u975e\u5e38\u4e0d\u6e05\u695a\u3002\u3002\u3002\u770b\u5f97\u6211\u7d2f\u6b7b\u56e7\u3002\u3002\u3002\u3002\u72b6\u6001\u4e0d\u662f\u5f88\u597d\u3002\u3002\u3002\u5f04\u5b8c\u4e86ABC\u4e4b\u540e\u8fd8\u6709\u70b9\u65f6\u95f4\u53ef\u4ee5\u505aD\u3002\u3002\u8981\u5199\u7ebf\u6bb5\u6811\u795e\u9a6c\u7684\u975e\u5e38\u7e41\u7410\u3002\u3002\u597d\u4e0d\u5bb9\u6613\u5feb\u5199\u5b8c\u4e86\u53d1\u73b0\u4e00\u4e9b\u95ee\u9898\u3002\u3002\u3002\u5bfc\u81f4\u6ca1\u6765\u7684\u53ca\u56e7\u3002\u3002\u3002A\u9996\u5148\u9898\u76ee\u4e2d\u5df2\u7ecf\u8bf4\u4e86\u3002\u3002\u3002\u8fd9\u4e2a\u56fe\u5f62\u662f\u56fa\u5b9a\u7684\u3002\u3002\u7136\u540e\u9700\u8981\u679a\u4e3e\u662f\u5728\u5947\u6570\u4f4d\u8fd8\u662f\u5728\u5076\u6570\u4f4d\u653erod\uff0c\u90a3\u4e48\u5c31\u53d8\u6210\u4e00\u4e2a\u4e8c\u5206\u56fe\u5339\u914d\u95ee\u9898\u4e86\u3002\u3002\u3002B\u3002\u3002\u3002\u628a\u53ef\u4ee5\u4e92\u76f8\u4ea4\u6362\u7684\u4f4d\u7f6e\u7528\u65e0\u5411\u8fb9\u8fde\u8d77\u6765\u3002\u3002\u53ea\u9700\u8981\u5224\u65ad\u6bcf\u4e2a\u70b9\u8ddf\u5b83\u7684\u76ee\u7684\u5730\u662f\u5426\u53ef\u8fbe\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002C\u8fd9\u4e2a\u9898\u76ee\u633a\u597d\u73a9\u7684\u3002\u3002\u679a\u4e3e\u6700\u5927\u503c\u518d\u52a8\u6001\u89c4\u5212\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002\u3002\u8bbeF\uff08k\uff09\u4e3a\u6700\u5927\u65f6\u95f4\u5c0f\u4e8ek\u7684\u6982\u7387\u3002\u3002Dp\u51faF\uff08k\uff09\u4e4b\u540eSum(( F(i+1)-F(i) )*i)\u5c31\u662f\u7b54\u6848\u4e86\u3002\u3002\u3002D\u770b\u9519\u4e86\u9898\u76ee\u3002\u3002\u3002\u53c8\u9519\u8bef\u7406\u89e3\u4e86\u6837\u4f8b\u3002\u3002\u3002\u5bfc\u81f4\u82b1\u4e86N\u957f\u65f6\u95f4\u5199\u7ebf\u6bb5\u6811\u3002\u3002\u3002\u6211\u662f\u5927\u50bb\u53c9\u3002\u3002\u3002\u3002\u6700\u540e\u7b2c23\u56e7\u3002\u3002\u3002\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/376"}],"collection":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=376"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/376\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}