{"id":53,"date":"2023-02-09T19:41:06","date_gmt":"2023-02-09T11:41:06","guid":{"rendered":"https:\/\/solost.cn\/?p=53"},"modified":"2023-02-09T19:41:06","modified_gmt":"2023-02-09T11:41:06","slug":"129","status":"publish","type":"post","link":"https:\/\/solost.cn\/?p=53","title":{"rendered":"AcWing-1402. \u661f\u7a7a\u4e4b\u591c"},"content":{"rendered":"<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/image-2.png\" alt=\"image.png\" title=\"image.png\"><\/p>\n<h2>solution<\/h2>\n<p>\u8fd9\u9053\u9898\u7684\u96be\u70b9\u5c31\u662f\u628a\u5f62\u72b6\u76f8\u540c\u7684\u5757\u7b97\u6210\u4e00\u79cd\uff0c\u65cb\u8f6c\u5bf9\u79f0\u90fd\u7b97\u662f\u4e00\u79cd\uff0c\u5982\u4f55\u8bc6\u522b\u5757\u662f\u5f62\u72b6\u76f8\u540c\u3002\u90a3\u5c31\u8981\u7528\u5230hash,\u6574\u4f53\u5904\u7406\u8fc7\u7a0b\u4e2d\u7528\u5230\u4e86\u4e00\u4e2a\u65b0\u7684\u7b97\u6cd5<\/p>\n<blockquote><p><strong>\u6d2a\u6c34\u586b\u5145(Flood fill)\u7b97\u6cd5<\/strong>\uff1a\u4ece\u4e00\u4e2a\u8d77\u59cb\u8282\u70b9\u5f00\u59cb\u628a\u9644\u8fd1\u4e0e\u5176\u8fde\u901a\u7684\u8282\u70b9\u63d0\u53d6\u51fa\u6216\u586b\u5145\u6210\u4e0d\u540c\u989c\u8272\u989c\u8272\uff0c\u76f4\u5230\u5c01\u95ed\u533a\u57df\u5185\u7684\u6240\u6709\u8282\u70b9\u90fd\u88ab\u5904\u7406\u8fc7\u4e3a\u6b62\uff0c\u662f\u4ece\u4e00\u4e2a\u533a\u57df\u4e2d\u63d0\u53d6\u82e5\u5e72\u4e2a\u8fde\u901a\u7684\u70b9\u4e0e\u5176\u4ed6\u76f8\u90bb\u533a\u57df\u533a\u5206\u5f00(\u6216\u5206\u522b\u67d3\u6210\u4e0d\u540c\u989c\u8272)\u7684\u7ecf\u5178\u7b97\u6cd5\u3002<\/p><\/blockquote>\n<h3>\u5982\u4f55\u5224\u65ad\u5757\u7684\u5f62\u72b6\u76f8\u540c\u5462\uff1f<\/h3>\n<p>\u90a3\u5c31\u7528\u4ed6\u4eec\u7684\u6bcf\u4e2a\u5757\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u7136\u540e\u52a0\u8d77\u6765\uff0c\u5982\u679c\u8bef\u5dee\u5c0f\u4e8eeps\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u8fd1\u4f3c\u8ba4\u4e3a\u8fd9\u4e24\u4e2a\u5757\u7684\u5f62\u72b6\u662f\u4e00\u6837\u7684\u3002<\/p>\n<p>\u65b0\u5b66\u4e00\u4e2a\u77e5\u8bc6\u70b9<\/p>\n<blockquote><p>fabs(x)\uff0c\u6d6e\u70b9\u6570\u53d6\u7edd\u5bf9\u503c<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>solution \u8fd9\u9053\u9898\u7684\u96be\u70b9\u5c31\u662f\u628a\u5f62\u72b6\u76f8\u540c\u7684\u5757\u7b97\u6210\u4e00\u79cd\uff0c\u65cb\u8f6c\u5bf9\u79f0\u90fd\u7b97\u662f\u4e00\u79cd\uff0c\u5982\u4f55\u8bc6\u522b\u5757\u662f\u5f62\u72b6\u76f8\u540c\u3002\u90a3\u5c31\u8981\u7528\u5230hash,\u6574\u4f53\u5904\u7406\u8fc7\u7a0b\u4e2d\u7528\u5230\u4e86\u4e00\u4e2a\u65b0\u7684\u7b97\u6cd5 \u6d2a\u6c34\u586b\u5145(Flood fill)\u7b97\u6cd5\uff1a\u4ece\u4e00\u4e2a\u8d77\u59cb\u8282\u70b9\u5f00\u59cb\u628a\u9644\u8fd1\u4e0e\u5176\u8fde\u901a\u7684\u8282\u70b9\u63d0\u53d6\u51fa\u6216\u586b\u5145\u6210\u4e0d\u540c\u989c\u8272\u989c\u8272\uff0c\u76f4\u5230\u5c01\u95ed\u533a\u57df\u5185\u7684\u6240\u6709\u8282\u70b9\u90fd\u88ab\u5904\u7406\u8fc7\u4e3a\u6b62\uff0c\u662f\u4ece\u4e00\u4e2a\u533a\u57df\u4e2d\u63d0\u53d6\u82e5\u5e72\u4e2a\u8fde\u901a\u7684\u70b9\u4e0e\u5176\u4ed6\u76f8\u90bb\u533a\u57df\u533a\u5206\u5f00(\u6216\u5206\u522b\u67d3\u6210\u4e0d\u540c\u989c\u8272)\u7684\u7ecf\u5178\u7b97\u6cd5\u3002 \u5982\u4f55\u5224\u65ad\u5757\u7684\u5f62\u72b6\u76f8\u540c\u5462\uff1f \u90a3\u5c31\u7528\u4ed6\u4eec\u7684\u6bcf\u4e2a\u5757\u4e4b\u95f4\u7684\u8ddd\u79bb\uff0c\u7136\u540e\u52a0\u8d77\u6765\uff0c\u5982\u679c\u8bef\u5dee\u5c0f\u4e8eeps\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u8fd1\u4f3c\u8ba4\u4e3a\u8fd9\u4e24\u4e2a\u5757\u7684\u5f62\u72b6\u662f\u4e00\u6837\u7684\u3002 \u65b0\u5b66\u4e00\u4e2a\u77e5\u8bc6\u70b9 fabs(x)\uff0c\u6d6e\u70b9\u6570\u53d6\u7edd\u5bf9\u503c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[25,24,22,23],"class_list":["post-53","post","type-post","status-publish","format-standard","hentry","category-solution","tag-bfs","tag-dfs","tag-flood-fill","tag-hash"],"_links":{"self":[{"href":"https:\/\/solost.cn\/index.php?rest_route=\/wp\/v2\/posts\/53","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solost.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solost.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solost.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/solost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=53"}],"version-history":[{"count":0,"href":"https:\/\/solost.cn\/index.php?rest_route=\/wp\/v2\/posts\/53\/revisions"}],"wp:attachment":[{"href":"https:\/\/solost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=53"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=53"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=53"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}