{"id":506,"date":"2012-01-26T11:50:00","date_gmt":"2012-01-26T03:50:00","guid":{"rendered":"http:\/\/localhost\/?p=506"},"modified":"2023-01-30T20:02:39","modified_gmt":"2023-01-30T20:02:39","slug":"poi18_brief_problem_solutions","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=506","title":{"rendered":"POI18 \u7b80\u8981\u9898\u89e3"},"content":{"rendered":"\n

\u8fd9\u4e24\u5929\u95f2\u7684\u614c\u628aPOI18\u6c34\u5b8c\u4e86\u3002\u3002\u3002\u51b3\u5b9a\u53d1\u4e00\u7bc7\u9898\u89e3\u4ee5\u9664\u8349\u3002\u3002\u3002\u3002\u3002
<\/p>\n

Stage I\u548cII\u4f3c\u4e4e\u53d1\u8fc7\u4e86\u3002\u3002\u5c31\u53d1\u4e0bStage III\u7684\u5427\u3002\u3002
Party\uff1a\u6bcf\u6b21\u627e\u5230\u4e24\u4e2a\u4e0d\u662f\u670b\u53cb\u7684\u4eba\uff0c\u628a\u4ed6\u4eec\u90fd\u5220\u6389\uff0c\u5c31\u53ef\u4ee5\u5f97\u51fa\u7ed3\u679c\uff0c\u4e3a\u4ec0\u4e48\u5f88\u5bb9\u6613\u8bc1\u660e\u3002
Sticks\uff1a\u6211\u89c9\u5f97\u8fd9\u9898\u6709\u70b9\u50bb\u903c\u3002\u3002\u5c06\u6240\u6709\u6392\u5e8f\u4e4b\u540e\uff0c\u626b\u63cf\u4e00\u904d\uff0c\u7ef4\u62a4\u6700\u5927\u4e14\u989c\u8272\u4e0d\u540c\u7684\u4e09\u4e2a\u5373\u53ef\u3002<\/p>\n

Periodicity\uff1a\u8fd9\u4e2a\u9898\u76ee\u8fd8\u662f\u5f88\u6709\u610f\u601d\u7684\uff0c\u9996\u5148\u8fd9\u8d27\u5176\u5b9e\u662f\u8981\u6c42\u4e00\u4e9b\u957f\u5ea6\u7684\u524d\u7f00\u548c\u540e\u7f00\u76f8\u7b49\uff0c\u6bd4\u59821,2,4,10\u3002\u3002\u90a3\u4e48\u6211\u4eec\u4f9d\u6b21\u6784\u9020\uff0c\u6bd4\u59821,2,4\u7684\u7ed3\u679c\u662fA,\u90a3\u4e48\u53ef\u4ee5\u77e5\u90531,2,4,10\u7684\u7ed3\u679c\u662fA**A\u3002\u4e2d\u95f4\u5f53\u7136\u662f\u80fd\u5168\u6dfb0\u6700\u597d\uff0c\u5982\u679c\u4e0d\u80fd\u5168\u6dfb0\uff0c\u628a\u6700\u540e\u4e00\u4e2a\u6539\u62101\u5c31\u884c\u4e86\u3002\u5982\u679c\u662f1,2,4,7\u8fd9\u6837\u7684\u8bdd\u3002\u76f4\u63a5\u5728A\u7684\u524d\u9762\u8865\u4e0a\u4e00\u4e2a\u957f\u5ea6\u6b63\u597d\u7684\u524d\u7f00\u5c31\u884c\u4e86\u3002<\/p>\n

Meteors\uff1a\u6211\u4eec\u8fdb\u884c\u5206\u6cbb\u5904\u7406\uff0c\u6bd4\u5982\u5904\u7406\u5230[l,r)\u8fd9\u4e2a\u64cd\u4f5c\u533a\u95f4\uff0c\u7b54\u6848\u5728\u8fd9\u4e2a\u533a\u95f4\u7684\u56fd\u5bb6\u96c6\u5408\u662fS\uff0c\u90a3\u4e48\u6211\u4eec\u6dfb\u52a0[l,m=(l+r)\/2)\u8fd9\u4e9b\u64cd\u4f5c\uff0c\u5982\u679c\u4e00\u4e9b\u56fd\u5bb6\u5df2\u7ecf\u591f\u4e86\uff0c\u90a3\u4e48\u5b83\u7684\u7b54\u6848\u5c31\u5728[l,m)\u5426\u5219\u5c31\u5728[m,r)\uff0c\u9012\u5f52\u5904\u7406\u5373\u53ef\uff0c\u590d\u6742\u5ea6\u662fnlogn\u3002<\/p>\n

Inspection\uff1a\u8fd9\u9898\u8c8c\u4f3c\u6ca1\u6709\u4ec0\u4e48\u96be\u5ea6\u3002\u3002\u6811\u5f62dp\u51fa\u6bcf\u4e2a\u5b50\u6811\u7684\u5927\u5c0f\u548c\u7ed3\u679c\u7136\u540e\u5224\u65ad\u4e00\u4e0b\u8ba1\u7b97\u7ed3\u679c\u5c31\u884c\u4e86\u3002<\/p>\n

Dynamite\uff1a\u9996\u5148\u4e8c\u5206\u7b54\u6848\uff0c\u7136\u540e\u4e0d\u96be\u53d1\u73b0\u4e00\u4e2alighted fuel\u8d8a\u9760\u8fd1\u6839\u8d8a\u597d\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u4ece\u5e95\u5411\u4e0a\u5904\u7406\uff0c\u5fc5\u987b\u653e\u7684\u65f6\u5019\u624d\u653e\u3002\u53e6\u5916\u8fd9\u4e2aidea\u5df2\u7ecf\u5e74\u5a07\u5904\u4e86\u5427>_<\u3002\u3002\u3002\u3002<\/p>\n

Programming Contest:\u4e0d\u96be\u5efa\u51fa\u8d39\u7528\u6d41\u6a21\u578b\uff0c\u4f46\u662f\u6ce8\u610f\u5230\u6709\u4e9b\u8fb9\u7684\u4ee3\u4ef7\u662f\u4e8c\u6b21\u51fd\u6570\uff0c\u4e0d\u8fc7\u8fd9\u4e0d\u5f71\u54cd\u8d39\u7528\u6d41\u7b97\u6cd5>_<\uff0c\u76f4\u63a5\u505a\u5c31\u884c\u4e86\u3002\u540c\u65f6\u7531\u4e8e\u6b64\u9898\u7684\u7279\u6b8a\u6027\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7684\u5f88\u7b80\u5355\uff0c\u6bd4\u5982BZOJ\u4e0a\u6211\u5c31\u5199\u4e86800B\u3002<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

\u8fd9\u4e24\u5929\u95f2\u7684\u614c\u628aPOI18\u6c34\u5b8c\u4e86\u3002\u3002\u3002\u51b3\u5b9a\u53d1\u4e00\u7bc7\u9898\u89e3\u4ee5\u9664\u8349\u3002\u3002\u3002\u3002\u3002 Stage I\u548cII\u4f3c\u4e4e\u53d1\u8fc7\u4e86\u3002\u3002\u5c31\u53d1\u4e0bStage III\u7684\u5427\u3002\u3002Party\uff1a\u6bcf\u6b21\u627e\u5230\u4e24\u4e2a\u4e0d\u662f\u670b\u53cb\u7684\u4eba\uff0c\u628a\u4ed6\u4eec\u90fd\u5220\u6389\uff0c\u5c31\u53ef\u4ee5\u5f97\u51fa\u7ed3\u679c\uff0c\u4e3a\u4ec0\u4e48\u5f88\u5bb9\u6613\u8bc1\u660e\u3002Sticks\uff1a\u6211\u89c9\u5f97\u8fd9\u9898\u6709\u70b9\u50bb\u903c\u3002\u3002\u5c06\u6240\u6709\u6392\u5e8f\u4e4b\u540e\uff0c\u626b\u63cf\u4e00\u904d\uff0c\u7ef4\u62a4\u6700\u5927\u4e14\u989c\u8272\u4e0d\u540c\u7684\u4e09\u4e2a\u5373\u53ef\u3002 Periodicity\uff1a\u8fd9\u4e2a\u9898\u76ee\u8fd8\u662f\u5f88\u6709\u610f\u601d\u7684\uff0c\u9996\u5148\u8fd9\u8d27\u5176\u5b9e\u662f\u8981\u6c42\u4e00\u4e9b\u957f\u5ea6\u7684\u524d\u7f00\u548c\u540e\u7f00\u76f8\u7b49\uff0c\u6bd4\u59821,2,4,10\u3002\u3002\u90a3\u4e48\u6211\u4eec\u4f9d\u6b21\u6784\u9020\uff0c\u6bd4\u59821,2,4\u7684\u7ed3\u679c\u662fA,\u90a3\u4e48\u53ef\u4ee5\u77e5\u90531,2,4,10\u7684\u7ed3\u679c\u662fA**A\u3002\u4e2d\u95f4\u5f53\u7136\u662f\u80fd\u5168\u6dfb0\u6700\u597d\uff0c\u5982\u679c\u4e0d\u80fd\u5168\u6dfb0\uff0c\u628a\u6700\u540e\u4e00\u4e2a\u6539\u62101\u5c31\u884c\u4e86\u3002\u5982\u679c\u662f1,2,4,7\u8fd9\u6837\u7684\u8bdd\u3002\u76f4\u63a5\u5728A\u7684\u524d\u9762\u8865\u4e0a\u4e00\u4e2a\u957f\u5ea6\u6b63\u597d\u7684\u524d\u7f00\u5c31\u884c\u4e86\u3002 Meteors\uff1a\u6211\u4eec\u8fdb\u884c\u5206\u6cbb\u5904\u7406\uff0c\u6bd4\u5982\u5904\u7406\u5230[l,r)\u8fd9\u4e2a\u64cd\u4f5c\u533a\u95f4\uff0c\u7b54\u6848\u5728\u8fd9\u4e2a\u533a\u95f4\u7684\u56fd\u5bb6\u96c6\u5408\u662fS\uff0c\u90a3\u4e48\u6211\u4eec\u6dfb\u52a0[l,m=(l+r)\/2)\u8fd9\u4e9b\u64cd\u4f5c\uff0c\u5982\u679c\u4e00\u4e9b\u56fd\u5bb6\u5df2\u7ecf\u591f\u4e86\uff0c\u90a3\u4e48\u5b83\u7684\u7b54\u6848\u5c31\u5728[l,m)\u5426\u5219\u5c31\u5728[m,r)\uff0c\u9012\u5f52\u5904\u7406\u5373\u53ef\uff0c\u590d\u6742\u5ea6\u662fnlogn\u3002 Inspection\uff1a\u8fd9\u9898\u8c8c\u4f3c\u6ca1\u6709\u4ec0\u4e48\u96be\u5ea6\u3002\u3002\u6811\u5f62dp\u51fa\u6bcf\u4e2a\u5b50\u6811\u7684\u5927\u5c0f\u548c\u7ed3\u679c\u7136\u540e\u5224\u65ad\u4e00\u4e0b\u8ba1\u7b97\u7ed3\u679c\u5c31\u884c\u4e86\u3002 Dynamite\uff1a\u9996\u5148\u4e8c\u5206\u7b54\u6848\uff0c\u7136\u540e\u4e0d\u96be\u53d1\u73b0\u4e00\u4e2alighted fuel\u8d8a\u9760\u8fd1\u6839\u8d8a\u597d\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u4ece\u5e95\u5411\u4e0a\u5904\u7406\uff0c\u5fc5\u987b\u653e\u7684\u65f6\u5019\u624d\u653e\u3002\u53e6\u5916\u8fd9\u4e2aidea\u5df2\u7ecf\u5e74\u5a07\u5904\u4e86\u5427>_<\u3002\u3002\u3002\u3002 Programming Contest:\u4e0d\u96be\u5efa\u51fa\u8d39\u7528\u6d41\u6a21\u578b\uff0c\u4f46\u662f\u6ce8\u610f\u5230\u6709\u4e9b\u8fb9\u7684\u4ee3\u4ef7\u662f\u4e8c\u6b21\u51fd\u6570\uff0c\u4e0d\u8fc7\u8fd9\u4e0d\u5f71\u54cd\u8d39\u7528\u6d41\u7b97\u6cd5>_<\uff0c\u76f4\u63a5\u505a\u5c31\u884c\u4e86\u3002\u540c\u65f6\u7531\u4e8e\u6b64\u9898\u7684\u7279\u6b8a\u6027\uff0c\u53ef\u4ee5\u5b9e\u73b0\u7684\u5f88\u7b80\u5355\uff0c\u6bd4\u5982BZOJ\u4e0a\u6211\u5c31\u5199\u4e86800B\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\/506"}],"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=506"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/506\/revisions"}],"predecessor-version":[{"id":782,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/506\/revisions\/782"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}