{"id":313,"date":"2010-07-20T13:24:00","date_gmt":"2010-07-20T05:24:00","guid":{"rendered":"http:\/\/localhost\/?p=313"},"modified":"2010-07-20T13:24:00","modified_gmt":"2010-07-20T05:24:00","slug":"croatian2009otoci","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=313","title":{"rendered":"[CROATIAN2009]OTOCI"},"content":{"rendered":"\n<p>[CROATIAN2009]OTOCI<\/p>\n<p>Time Limit:50000MS&#160; Memory Limit:165536K<br \/>Total Submit:22 Accepted:20 <br \/>Case Time Limit:5000MS<\/p>\n<p><strong>Description <\/strong><\/p>\n<p> \u7ed9\u51fan\u4e2a\u7ed3\u70b9\u4ee5\u53ca\u6bcf\u4e2a\u70b9\u521d\u59cb\u65f6\u5bf9\u5e94\u7684\u6743\u503cwi\u3002\u8d77\u59cb\u65f6\u70b9\u4e0e\u70b9\u4e4b\u95f4\u6ca1\u6709\u8fde\u8fb9\u3002\u67093\u7c7b\u64cd\u4f5c\uff1a <br \/>1\u3001bridge A B\uff1a\u8be2\u95ee\u7ed3\u70b9A\u4e0e\u7ed3\u70b9B\u662f\u5426\u8fde\u901a\u3002\u5982\u679c\u662f\u5219\u8f93\u51fa\u201cno\u201d\u3002\u5426\u5219\u8f93\u51fa\u201cyes\u201d\uff0c\u5e76\u4e14\u5728\u7ed3\u70b9A\u548c\u7ed3\u70b9B\u4e4b\u95f4\u8fde\u4e00\u6761\u65e0\u5411\u8fb9\u3002 <br \/>2\u3001penguins A X\uff1a\u5c06\u7ed3\u70b9A\u5bf9\u5e94\u7684\u6743\u503cwA\u4fee\u6539\u4e3aX\u3002 <br \/>3\u3001excursion A  B\uff1a\u5982\u679c\u7ed3\u70b9A\u548c\u7ed3\u70b9B\u4e0d\u8fde\u901a\uff0c\u5219\u8f93\u51fa\u201cimpossible\u201d\u3002\u5426\u5219\u8f93\u51fa\u7ed3\u70b9A\u5230\u7ed3\u70b9B\u7684\u8def\u5f84\u4e0a\u7684\u70b9\u5bf9\u5e94\u7684\u6743\u503c\u7684\u548c\u3002 <br \/>\u7ed9\u51faq\u4e2a\u64cd\u4f5c\uff0c\u8981\u6c42\u5728\u7ebf\u5904\u7406\u6240\u6709\u64cd\u4f5c\u3002 <br \/>\u6570\u636e\u8303\u56f4\uff1a1&lt;=n&lt;=30000, 1&lt;=q&lt;=300000, 0&lt;=wi&lt;=1000\u3002 <\/p>\n<p><strong>Input <\/strong><\/p>\n<p> \u7b2c\u4e00\u884c\u5305\u542b\u4e00\u4e2a\u6574\u6570n(1&lt;=n&lt;=30000)\uff0c\u8868\u793a\u8282\u70b9\u7684\u6570\u76ee\u3002 <br \/>\u7b2c\u4e8c\u884c\u5305\u542bn\u4e2a\u6574\u6570\uff0c\u7b2ci\u4e2a\u6574\u6570\u8868\u793a\u7b2ci\u4e2a\u8282\u70b9\u521d\u59cb\u65f6\u5bf9\u5e94\u7684\u6743\u503c\u3002 <br \/>\u7b2c\u4e09\u884c\u5305\u542b\u4e00\u4e2a\u6574\u6570q(1&lt;=n&lt;=300000)\uff0c\u8868\u793a\u64cd\u4f5c\u7684\u6570\u76ee\u3002 <br \/>\u4ee5\u4e0bq\u884c\uff0c\u6bcf\u884c\u5305\u542b\u4e00\u4e2a\u64cd\u4f5c\uff0c\u64cd\u4f5c\u7684\u7c7b\u522b\u89c1\u9898\u76ee\u63cf\u8ff0\u3002 <br \/>\u4efb\u610f\u65f6\u523b\u6bcf\u4e2a\u8282\u70b9\u5bf9\u5e94\u7684\u6743\u503c\u90fd\u662f1\u52301000\u7684\u6574\u6570\u3002 <\/p>\n<p><strong>Output <\/strong><\/p>\n<p> \u8f93\u51fa\u6240\u6709bridge\u64cd\u4f5c\u548cexcursion\u64cd\u4f5c\u5bf9\u5e94\u7684\u8f93\u51fa\uff0c\u6bcf\u4e2a\u4e00\u884c\u3002<\/p>\n<p><strong>Sample Input <\/strong><\/p>\n<p>5<br \/>4 2 4 5 6<br \/>10<br \/>excursion 1 1<br \/>excursion 1 2<br \/>bridge 1 2<br \/>excursion 1 2<br \/>bridge 3 4<br \/>bridge 3 5<br \/>excursion 4 5<br \/>bridge 1 3<br \/>excursion 2 4<br \/>excursion 2 5<\/p>\n<p><strong>Sample Output <\/strong><\/p>\n<p>4<br \/>impossible<br \/>yes<br \/>6<br \/>yes<br \/>yes<br \/>15<br \/>yes<br \/>15<br \/>16<\/p>\n<p><strong>Source<br \/>\u8fd9\u9898\u505a\u6cd5\u5f88\u591a\u554a\u3002\u3002\u6709\u52a8\u6001\u6811\u3001DFS\u5e8f\u4e4b\u7c7b\u7684\u3002\u3002\u6211\u7684\u7b97\u6cd5\u662f\u6700\u50bb\u53c9\u7684\u4e00\u79cd\u3002\u3002\u56e0\u4e3a\u6211\u975e\u5e38\u7684\u50bb\u53c9\u3002\u3002\u6240\u4ee5\u6211\u5199\u4e86\u4e2a\u6811\u94fe\u5256\u5206\u6765\u505a\u8fd9\u4e2a\u3002\u7531\u4e8e\u53ea\u8981\u6c42\u548c\u6240\u4ee5\u4e0a\u6811\u72b6\u6570\u7ec4\u5c31OK\u5566\u3002\u3002\u4e0d\u8fc7\u7531\u4e8e\u6709+\u8fb9\u7684\u64cd\u4f5c\u3002\u3002\u4e8e\u662f\u8bbe\u5b9a\u4e00\u4e2a\u8be2\u95ee\u8017\u65f6\u4e0a\u9650\uff0c\u5982\u679c\u8d85\u8fc7\u4e0a\u9650\u5c31\u91cd\u65b0\u5256\u5206\uff0c\u7136\u540e+\u8fb9\u5c31\u76f4\u63a5\u66b4\u529b+\u5c31\u53ef\u4ee5\u4e86\u56e7\u3002\u3002<br \/>Code\uff1a<br \/><a href=\"http:\/\/www.ideone.com\/ZAZvq\" target=\"_blank\">www.ideone.com\/ZAZvq<\/a><br \/> <\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[CROATIAN2009]OTOCI Time Limit:50000MS&#160; Memory Limit:165536KTotal Submit:22 Accepted:20 Case Time Limit:5000MS Description \u7ed9\u51fan\u4e2a\u7ed3\u70b9\u4ee5\u53ca\u6bcf\u4e2a\u70b9\u521d\u59cb\u65f6\u5bf9\u5e94\u7684\u6743\u503cwi\u3002\u8d77\u59cb\u65f6\u70b9\u4e0e\u70b9\u4e4b\u95f4\u6ca1\u6709\u8fde\u8fb9\u3002\u67093\u7c7b\u64cd\u4f5c\uff1a 1\u3001bridge A B\uff1a\u8be2\u95ee\u7ed3\u70b9A\u4e0e\u7ed3\u70b9B\u662f\u5426\u8fde\u901a\u3002\u5982\u679c\u662f\u5219\u8f93\u51fa\u201cno\u201d\u3002\u5426\u5219\u8f93\u51fa\u201cyes\u201d\uff0c\u5e76\u4e14\u5728\u7ed3\u70b9A\u548c\u7ed3\u70b9B\u4e4b\u95f4\u8fde\u4e00\u6761\u65e0\u5411\u8fb9\u3002 2\u3001penguins A X\uff1a\u5c06\u7ed3\u70b9A\u5bf9\u5e94\u7684\u6743\u503cwA\u4fee\u6539\u4e3aX\u3002 3\u3001excursion A B\uff1a\u5982\u679c\u7ed3\u70b9A\u548c\u7ed3\u70b9B\u4e0d\u8fde\u901a\uff0c\u5219\u8f93\u51fa\u201cimpossible\u201d\u3002\u5426\u5219\u8f93\u51fa\u7ed3\u70b9A\u5230\u7ed3\u70b9B\u7684\u8def\u5f84\u4e0a\u7684\u70b9\u5bf9\u5e94\u7684\u6743\u503c\u7684\u548c\u3002 \u7ed9\u51faq\u4e2a\u64cd\u4f5c\uff0c\u8981\u6c42\u5728\u7ebf\u5904\u7406\u6240\u6709\u64cd\u4f5c\u3002 \u6570\u636e\u8303\u56f4\uff1a1&lt;=n&lt;=30000, 1&lt;=q&lt;=300000, 0&lt;=wi&lt;=1000\u3002 Input \u7b2c\u4e00\u884c\u5305\u542b\u4e00\u4e2a\u6574\u6570n(1&lt;=n&lt;=30000)\uff0c\u8868\u793a\u8282\u70b9\u7684\u6570\u76ee\u3002 \u7b2c\u4e8c\u884c\u5305\u542bn\u4e2a\u6574\u6570\uff0c\u7b2ci\u4e2a\u6574\u6570\u8868\u793a\u7b2ci\u4e2a\u8282\u70b9\u521d\u59cb\u65f6\u5bf9\u5e94\u7684\u6743\u503c\u3002 \u7b2c\u4e09\u884c\u5305\u542b\u4e00\u4e2a\u6574\u6570q(1&lt;=n&lt;=300000)\uff0c\u8868\u793a\u64cd\u4f5c\u7684\u6570\u76ee\u3002 \u4ee5\u4e0bq\u884c\uff0c\u6bcf\u884c\u5305\u542b\u4e00\u4e2a\u64cd\u4f5c\uff0c\u64cd\u4f5c\u7684\u7c7b\u522b\u89c1\u9898\u76ee\u63cf\u8ff0\u3002 \u4efb\u610f\u65f6\u523b\u6bcf\u4e2a\u8282\u70b9\u5bf9\u5e94\u7684\u6743\u503c\u90fd\u662f1\u52301000\u7684\u6574\u6570\u3002 Output \u8f93\u51fa\u6240\u6709bridge\u64cd\u4f5c\u548cexcursion\u64cd\u4f5c\u5bf9\u5e94\u7684\u8f93\u51fa\uff0c\u6bcf\u4e2a\u4e00\u884c\u3002 Sample Input 54 2 4 5 610excursion 1 1excursion 1 2bridge 1 2excursion 1 2bridge 3 4bridge 3 5excursion 4 5bridge 1 [&hellip;]<\/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\/313"}],"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=313"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/313\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}