{"id":340,"date":"2024-04-28T10:52:40","date_gmt":"2024-04-28T02:52:40","guid":{"rendered":"https:\/\/seanxd.com\/?p=340"},"modified":"2024-04-28T10:52:42","modified_gmt":"2024-04-28T02:52:42","slug":"zerojudge-f579","status":"publish","type":"post","link":"https:\/\/seanxd.com\/zh\/zerojudge-f579\/","title":{"rendered":"ZeroJudge F579: \u8cfc\u7269\u8eca"},"content":{"rendered":"\n\n\n

\u7d66\u5169\u500b\u6574\u6578 A \u548c B\uff0c\u4ee3\u8868\u4f60\u8981\u89c0\u5bdf\u7684\u5546\u54c1\u7de8\u865f\u3002<\/p>\n\n\n\n

\u5546\u5834\u5728\u6bcf\u4e00\u4f4d\u5ba2\u4eba\u7684\u8cfc\u7269\u8eca\u90fd\u653e\u7f6e\u4e86\u4e00\u500b\u611f\u61c9\u5668\uff0c\u80fd\u5920\u5f97\u77e5\u6bcf\u4f4d\u5ba2\u4eba\u5c07\u5546\u54c1\u653e\u5165\u8cfc\u7269\u8eca\u6216\u62ff\u51fa\u8cfc\u7269\u8eca\u3002\u611f\u61c9\u5668\u5b58\u653e\u7684\u7d00\u9304\u662f\u4e00\u9023\u4e32\u7684\u6574\u6578\uff0c\u4e00\u500b\u6b63\u6574\u6578 x \u8868\u793a\u9019\u4f4d\u5ba2\u4eba\u5c07\u4e00\u500b\u7de8\u865f\u662f x \u7684\u5546\u54c1\u653e\u5165\u4ed6\u7684\u8cfc\u7269\u8eca\uff0c\u4e00\u500b\u8ca0\u6578 -x \u8868\u793a\u9019\u4f4d\u5ba2\u4eba\u5c07\u4e00\u500b\u7de8\u865f\u662f
\u7684\u5546\u54c1\u5f9e\u4ed6\u7684\u8cfc\u7269\u8eca\u79fb\u9664\u3002<\/p>\n\n\n\n

\u73fe\u5728\u6709 N \u4f4d\u5ba2\u4eba\u7684\u8cfc\u7269\u8eca\u7d00\u9304\uff0c\u4f60\u60f3\u8981\u7d71\u8a08\u6709\u5e7e\u4f4d\u5ba2\u4eba\u6700\u5f8c\u6709\u8cfc\u8cb7\u5546\u54c1 A \u8207\u5546\u54c1 B<\/strong>\uff0c\u4e00\u500b\u5ba2\u4eba\u6709\u8cfc\u8cb7\u5546\u54c1 X \u8868\u793a\u5546\u54c1 X \u5728\u4ed6\u7684\u8cfc\u7269\u8eca\u4e2d\u300c\u653e\u5165\u7684\u6b21\u6578\u6bd4\u62ff\u51fa\u9084\u591a<\/strong>\u300d\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n
\u7bc4\u4f8b\u8f38\u5165<\/th>\u7bc4\u4f8b\u8f38\u51fa<\/th><\/tr><\/thead>
\u7b2c\u4e00\u884c\u6709\u5169\u500b\u6b63\u6574\u6578 A \u548c B
(1 <= A, B <= 100)
\u7b2c\u4e8c\u884c\u6709\u4e00\u500b\u6b63\u6574\u6578 N (1 <= N <= 100)\uff0c\u8868\u793a\u5ba2\u4eba\u7684\u6578\u91cf\u3002
\u63a5\u4e0b\u4f86\u6709 N \u884c\uff0c\u7b2c i \u884c\u8868\u793a\u7b2c i \u4f4d\u5ba2\u4eba\u7684\u8cfc\u7269\u8eca\u7d00\u9304\u3002
\u5c0d\u65bc\u6bcf\u500b\u8cfc\u7269\u8eca\u7d00\u9304\u5305\u542b\u4e00\u9023\u4e32\u7684\u6574\u6578\uff0c\u6700\u5f8c\u4e00\u500b\u6578\u5b57\u5fc5\u5b9a\u70ba 0\uff0c\u8868\u793a\u8cfc\u7269\u7d00\u9304\u7d50\u5c3e<\/strong>\uff0c\u5176\u4ed6\u6578\u5b57\u5fc5\u5b9a\u70ba\u975e 0 \u7684\u6574\u6578\u4e14\u7d55\u5c0d\u503c\u4e0d\u8d85\u904e
\uff0c\u5b9a\u7fa9\u540c\u984c\u76ee\u6558\u8ff0\u3002<\/td>		\u8f38\u51fa\u4e00\u500b\u6574\u6578\uff0c\u8868\u793a\u6709\u5e7e\u4f4d\u5ba2\u4eba\u540c\u6642\u6709\u8cfc\u8cb7\u5546\u54c1 A \u8207\u5546\u54c1 B\u3002<\/td><\/tr>
1 8
5
1 8 0
5 6 0
2 7 0
8 1 0
33 22 0<\/td>		2<\/td><\/tr>
3 9
2
3 9 -3 3 9 0
3 3 -3 -3 9 0<\/td>		1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n

\u6536\u8cfc\u7269\u8eca\u8cc7\u6599\u7684\u6642\u5019\u53ef\u4ee5\u7528 EOF<\/strong>\uff0c\u53ef\u4ee5\u7528 Map<\/strong> \u4f86\u7d00\u9304\u5546\u54c1\u7684\u9032\u51fa<\/strong>\uff0c\u5982\u679c\u653e\u9032\u53bb\u5c31 +1\uff0c\u62ff\u51fa\u4f86\u5c31 -1\u3002<\/p>\n\n\n\n

\u6536\u5b8c\u6bcf\u500b\u4eba\u7684\u8cc7\u6599\u53ef\u4ee5\u5224\u65b7 Map \u4e2d\u7684\u5546\u54c1 A \u548c B \u6709\u6c92\u6709\u8d85\u904e 0\uff0c\u8981\u300cA \u8ddf B \u90fd\u6709\u8cb7<\/strong>\u300d\u7b54\u6848\u624d\u80fd +1\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dZeroJudge F579: \u8cfc\u7269\u8eca<\/a><\/h3>\n\n\n\n
#include <iostream>\n#include <map>\nusing namespace std;\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int a, b;\n    cin >> a >> b;\n    int N;\n    cin >> N;\n    int ans = 0;\n    for (int i = 0; i<N; i++)\n    {\n        int tmp;\n        map<int, int>MAP;\n        while (cin >> tmp && tmp != 0)\n        {\n            if (tmp > 0) MAP[tmp]++;\n            else MAP[tmp*-1]--;\n        }\n        if (MAP[a] > 0 && MAP[b] > 0) ans++;\n    }\n    cout << ans << "\\n";\n}\n\n\/\/ZeroJudge F579\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
\u7d66\u5169\u500b\u6574\u6578 A \u548c B\uff0c\u4ee3\u8868\u4f60\u8981\u89c0\u5bdf\u7684\u5546\u54c1\u7de8\u865f\u3002 \u5546\u5834\u5728\u6bcf\u4e00\u4f4d\u5ba2\u4eba\u7684\u8cfc\u7269\u8eca\u90fd\u653e\u7f6e\u4e86\u4e00\u500b\u611f\u61c9\u5668\uff0c\u80fd\u5920\u5f97\u77e5\u6bcf\u4f4d\u5ba2\u4eba […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[25],"tags":[14,8,9],"class_list":["post-340","post","type-post","status-publish","format-standard","hentry","category-ioi-apcs","tag-map","tag-8","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/340","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/comments?post=340"}],"version-history":[{"count":1,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/340\/revisions"}],"predecessor-version":[{"id":341,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/340\/revisions\/341"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}