{"id":1985,"date":"2018-07-24T00:13:02","date_gmt":"2018-07-23T16:13:02","guid":{"rendered":"http:\/\/sforest.in\/?p=1985"},"modified":"2018-07-24T00:13:02","modified_gmt":"2018-07-23T16:13:02","slug":"%e8%a7%a3%e9%a2%98%e6%8a%a5%e5%91%8asysu-01","status":"publish","type":"post","link":"https:\/\/sforest.in\/ja\/%e8%a7%a3%e9%a2%98%e6%8a%a5%e5%91%8asysu-01\/","title":{"rendered":"\u89e3\u9898\u62a5\u544a@SYSU-01"},"content":{"rendered":"<p>\u7ebf\u4e0a\u96c6\u8bad\u7b2c\u4e00\u671f\u5f00\u59cb\u5566~<br \/>\n\u8bf4\u6765\uff0c\u597d\u4e45\u6ca1\u6253\u8fc7\u4e00\u573a\u5b8c\u6574\u7684\u6bd4\u8d5b\u4e86\u3002\u8fd9\u573a\u5b66\u957f\u8bf4\u662f\u624b\u901f\u573a\uff0c\u5927\u6982\u4e5f\u6ca1\u9519\u3002<br \/>\n\u7761\u524d\u6574\u7406\u4e00\u4e0b\u89e3\u9898\u62a5\u544a\uff0c\u8fd8\u6709\u4e09\u9898\u6ca1\u5199\uff08\u56de\u6765\u540e\u5176\u5b9e\u6839\u672c\u6ca1\u770b\uff09\u2026<br \/>\n<strong>Rank 90; Solved out 8 of 12.<\/strong><br \/>\n<strong>Problem A.<\/strong><br \/>\n\u8bfb\u9898\u8fd8\u662f\u8981\u4ed4\u7ec6\u4e00\u70b9\uff0c\u6700\u597d\u628a\u6570\u636e\u73a9\u6e05\u695a\u4e86\u518d\u5f00\u59cb\u5199\u3002\u5927\u81f4\u601d\u8def\u7b80\u5355\uff0c\u5c31\u662f\u7edf\u8ba1+\u6392\u5e8f\uff0c\u6700\u540e\u7684\u7b54\u6848\u663e\u7136\u662f\u4e2a C(a, b) \u8fd9\u6837\u7684\u4e1c\u897f\uff0c\u4ee4n\u662f\u6700\u5927set\u4e2d\u77f3\u5934\u6700\u5c11\u7684\u989c\u8272\u7684\u77f3\u5934\u6570\u91cf\uff0ca\u5c31\u662f\u6240\u6709\u989c\u8272\u4e2d\u6709n\u4e2a\u77f3\u5934\u7684\u989c\u8272\u6570\uff0cb\u5c31\u662f\u6700\u5927set\u4e2d\u53d6\u5230\u7684\u6709n\u4e2a\u77f3\u5934\u7684\u989c\u8272\u6570\u3002<br \/>\nWA\u70b9\u5728\u4e8eC\u6ca1\u5199\u597d &#8211; C(a, b)\uff0c\u5f53 a-b &lt; b\u65f6\u53ef\u4ee5 b = a-b\uff0c\u8fd9\u6837a\u572829\u5185\u90fd\u4e0d\u4f1a\u8d85\u3002<br \/>\n<strong>Problem B.<\/strong><br \/>\n\u8fd9\u4e2a\u663e\u7136\u5c31\u662f\u5e73\u5747\u5206\u7ed3\u679c\u6700\u4f18\uff0c\u5927\u6982\u53ef\u4ee5\u4e0d\u7b49\u5f0f\u8bc1\u4e00\u4e0b\uff1f<br \/>\n\u5f0f\u5b50\u867d\u7136\u633a\u957f\u4f46\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5927\u6982\u5c31\u662fa^2+a*b+b^2\u8fd9\u6837\u7684\u611f\u89c9\uff08\u5f53\u7136\u4e0d\u662f\u8fd9\u4e2a\u6837\u5b50\u7684\uff09\u3002<br \/>\n<strong>Problem C.<\/strong><br \/>\n\u9898\u76ee\u867d\u7136\u8bf4\u4ece1\u5f00\u59cb\uff0c\u4e0d\u8fc7\u4e3a\u4e86\u5199\u4ee3\u7801\u65b9\u4fbf\u6211\u8fd8\u662f\u4ece0\u5f00\u59cb\uff0c\u5076\u8d1f\u5947\u6b63\u3002<br \/>\n\u9996\u5148-1\u7684\u6761\u4ef6\u662f\u5f88\u663e\u7136\u7684\uff0c\u73b0\u6709\u5b57\u6bcd\u6570\u91cf\u52a0\u4e0a\u95ee\u53f7\u6570\u91cf\u65e0\u6cd5\u6ee1\u8db3k\u5c31\u4e22\u51fa\u53bb\u4e86\u3002<br \/>\n\u7136\u540e\u6240\u6709\u7684\u8d1f\u53f7\u4f4d\u7f6e\u663e\u7136\u5e94\u8be5\u5c3d\u91cf\u653ea\uff0c\u6240\u6709\u6b63\u53f7\u4f4d\u7f6e\u663e\u7136\u5e94\u8be5\u5c3d\u91cf\u653ez\u3002\u4e0d\u8fc7\uff0c\u7531\u4e8e\u6709\u4e2ak\u7684\u9650\u5236\uff0c\u8fd8\u662f\u8981\u5148\u89e3\u51b3\u6389\u8fd9\u4e2a\u9650\u5236\u95ee\u9898\u7684\u3002<br \/>\n\u5206\u522b\u8ba1\u7b97\u4f7f\u7528MINUS\u4f4d\u7f6e\u548cPLUS\u4f4d\u7f6e\u7684\u635f\u5931\uff0c\u53d6\u8f83\u5c0f\u8005\uff08\u5f53\u7136\uff0c\u5982\u679c\u6ca1\u6709\u7a7a\u4f59\u4f4d\u7f6e\u5c31\u76f4\u63a5\u53d6\u53e6\u4e00\u8fb9\u4e86\uff09\u6765\u653e\u7f6e\u3002\u6bd4\u65b9\u8bf4\uff0c\u8d1f\u5df2\u7ecf\u6709\u4e86abc\uff0c\u800c\u6b63\u53ea\u7528\u4e86z\uff0c\u90a3\u5c31\u4f18\u5148\u653ey\u3002<br \/>\nTLE\u4e86\u4e00\u6b21\uff0c\u539f\u56e0\u672a\u77e5\uff0c\u660e\u65e9\u8bd5\u8bd5\u3002<br \/>\n<strong>Problem D.<\/strong><br \/>\n\u8fd9\u9898\u662f\u4e2a\u89e3\u91ca\u5668\uff0c\u4e4d\u4e00\u770b\u6709\u4e9b\u5413\u4eba\uff0c\u4e0d\u8fc7\u5176\u5b9e\u5c31\u662f\u4e2a\u6a21\u62df\u9898\uff0c\u633a\u7b80\u5355\u7684\u3002<br \/>\nWA\u4e86\u4e00\u6b21\uff0c\u9519\u5728\u5c11\u6253\u4e2a0\uff0c\u4e0d\u5e94\u8be5\u3002<br \/>\n<strong>Problem E.<\/strong><br \/>\n\u6700\u540e\u534a\u5c0f\u65f6\u6ca1\u6765\u5f97\u53ca\u8c03\u51fa\u6765\uff0c\u6bd4\u8f83\u53ef\u60dc\u3002<br \/>\n\u7528\u4e0a\u4e00\u9898\u7684\u795e\u79d8\u8bed\u8a00\u5199\u4ee3\u7801\uff0c\u8ba1\u7b97SUM(1, N)\u3002<br \/>\n\u6211\u7684\u601d\u8def\u662f\u8fd9\u6837\u7684\uff1a<br \/>\n\u8bfb\u53d6N\u5230\u5185\u5b58-&gt;\u590d\u5236\u5185\u5b58\u5230A\u548cB-&gt;\u628aB\u7684\u6570\u5b57\u8f6c\u79fb\u5230C-&gt;\u8bfb\u53d6A\u5e76\u51cf\u4e00-&gt;\u82e5\u975e0\u5219\u56de\u5230\u5f00\u5934\uff1b\u4e3a0\u5219\u8f93\u51fa<br \/>\n\u73b0\u5728\u4ed4\u7ec6\u60f3\u60f3\uff0c\u76f4\u63a5\u8fd9\u6837\u5c31\u597d\u4e86\uff1a<br \/>\n\u8bfb\u53d6N\u5230\u5185\u5b58-&gt;\u590d\u5236\u5185\u5b58\u5230A\u548cC-&gt;\u8bfb\u53d6A\u5e76\u51cf\u4e00-&gt;\u5224\u65ad\u662f\u5426\u56de\u5230\u5f00\u5934<br \/>\n\u566b\uff0c\u5982\u679c\u65e9\u60f3\u5230\u53ef\u80fd\u5c31\u4e0d\u4f1a\u6b7b\u4e86\u3002<br \/>\n\u679c\u7136\u662f\u592a\u7d27\u5f20\u5fc3\u6001\u5d29\u4e86\u5417\uff09<br \/>\n\u4e0d\u8fc7\u53ef\u89c6\u5316\u7f16\u7a0b\uff08\u4e0d\uff09\u5176\u5b9e\u8d85\u6709\u8da3\u7684\uff01\u6709\u70b9\u753b\u7535\u8def\u7684\u611f\u89c9\u3002<br \/>\n<strong>Problem F.<\/strong><br \/>\n\u6c49\u8bfa\u5854\u9898\uff0c\u4e00\u5f00\u59cb\u5984\u56fe\u627e\u89c4\u5f8b\uff0c\u6ca1\u627e\u7740\uff0c\u4e5f\u6d6a\u8d39\u4e86\u4e0d\u5c11\u65f6\u95f4\u3002<br \/>\n\u540e\u6765\u5c31\u51b7\u9759\u63a8\uff0c\u4e00\u53d1\u8fc7\u4e86\u3002<br \/>\n\u6570\u636e\u5176\u5b9e\u7ed9\u4e86\u63d0\u793a\uff0c\u628aN\u4e2a\u76d8\u5b50\u4eceA\u67f1\u632a\u5230B\u67f1\u89812^N-1\u7684\u6b65\u6570\u3002<br \/>\n\u90a3\u6211\u4eec\u5c31\u4ece\u6700\u5927\u7684\u4e00\u4e2a\u76d8\u5b50\u5f80\u524d\u5012\u63a8\uff0c\u9700\u8981\u628a\u5b83\u4e0a\u9762\u7684\u76d8\u5b50\u90fd\u7ed9\u632a\u5230&#8221;\u65e2\u975e\u6700\u5927\u76d8\u5b50\u7684\u76ee\u6807\u67f1\u5b50\u4e5f\u975e\u539f\u6765\u6240\u5728\u67f1\u5b50&#8221;\u7684\u90a3\u4e2a\u67f1\u5b50\u4e0a\u3002<br \/>\n\u5982\u679c\u76ee\u6807\u67f1\u5b50\u6070\u597d\u662f\u6240\u5728\u67f1\u5b50\u5c31\u4e0d\u7528\u79fb\u52a8\u4e86\uff0ccontinue\uff0c\u5f00\u5fc3\u3002<br \/>\n\u7136\u540e\u5c31\u53d8\u6210\u4e86\u4e00\u9053\u6109\u5feb\u7684\u6a21\u62df\u9898\u2026\u2026<br \/>\n<strong>Problem G.<\/strong><br \/>\n\u8fd9\u9898\u6ca1\u505a\uff0c\u8d4bBFS\u5e8f\uff0c\u6811\u72b6\u6570\u7ec4\u3002<br \/>\n<strong>Problem H.<\/strong><br \/>\n\u7b80\u5355\u6a21\u62df\u9898\u3002\u8981\u6ce8\u610f\u7684\u662f\u8fd9\u5176\u5b9e\u548c\u8c1c\u9898\u6ca1\u4ec0\u4e48\u5173\u7cfb\uff0c\u6240\u6c42\u5e8f\u5217\u91cc\u662f\u4e0d\u80fd\u670987\u8fd9\u79cd\u4e1c\u897f\u7684\u3002<br \/>\n<strong>Problem I.<\/strong><br \/>\n\u6ca1\u505a\u3002<br \/>\n<strong>Problem J.<\/strong><br \/>\n\u4e24\u4e2amap A\u4e0b\u53bb\u5c31\u8fc7\u4e86\u3002<br \/>\n<strong>Problem K.<\/strong><br \/>\n\u597d\u50cf\u662f\u6700\u77ed\u8def\uff0c\u4f46\u662f\u6ca1\u5199\u3002<br \/>\n<strong>Problem L.<\/strong><br \/>\nA+B\u7ea7\u522b\u7684\u9898\u76ee\u3002<br \/>\n\u8981\u6ce8\u610fA\u4e0d\u8981\u53d6\u8d85\u8fc7X\u4e86\u3002<\/p>\n<h4>\u665a\u5b89<\/h4>\n<p>\u660e\u65e5\u3082\u9811\u5f35\u308b\u305e\u3044\uff01<\/p>","protected":false},"excerpt":{"rendered":"<p>\u7ebf\u4e0a\u96c6\u8bad\u7b2c\u4e00\u671f\u5f00\u59cb\u5566~ \u8bf4\u6765\uff0c\u597d\u4e45\u6ca1\u6253\u8fc7\u4e00\u573a\u5b8c\u6574\u7684\u6bd4\u8d5b\u4e86\u3002\u8fd9\u573a\u5b66\u957f\u8bf4\u662f\u624b\u901f\u573a\uff0c\u5927\u6982\u4e5f\u6ca1\u9519\u3002 \u7761\u524d\u6574\u7406\u4e00\u4e0b\u89e3\u9898\u62a5\u544a\uff0c\u8fd8\u6709\u4e09\u9898\u6ca1\u5199\uff08\u56de\u6765\u540e\u5176\u5b9e\u6839\u672c\u6ca1\u770b\uff09\u2026 Rank 90; Solved out 8 of 12. Probl &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/sforest.in\/ja\/%e8%a7%a3%e9%a2%98%e6%8a%a5%e5%91%8asysu-01\/\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;\u89e3\u9898\u62a5\u544a@SYSU-01&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[230],"class_list":["post-1985","post","type-post","status-publish","format-standard","hentry","category-coding","tag-230"],"_links":{"self":[{"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/posts\/1985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/comments?post=1985"}],"version-history":[{"count":0,"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/posts\/1985\/revisions"}],"wp:attachment":[{"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/media?parent=1985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/categories?post=1985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sforest.in\/ja\/wp-json\/wp\/v2\/tags?post=1985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}