{"id":622,"date":"2020-06-10T22:39:15","date_gmt":"2020-06-10T14:39:15","guid":{"rendered":"http:\/\/www.guanhaobo.cn\/?p=622"},"modified":"2020-06-10T22:39:15","modified_gmt":"2020-06-10T14:39:15","slug":"bjtuoj-1927-%e5%ad%a6%e5%88%b0%e5%8d%81%e4%b8%80%e7%82%b9%e6%89%8d%e6%98%af%e7%9c%9f%e5%ad%a6%e9%9c%b8","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=622","title":{"rendered":"BJTUOJ 1927 \u2014 \u5b66\u5230\u5341\u4e00\u70b9\u624d\u662f\u771f\u5b66\u9738"},"content":{"rendered":"

\u9898\u76ee<\/h3>\n

\u4e1c\u533a\u4e00\u6559\u5b98\u65b9\u58f0\u79f0\u5341\u4e00\u70b9\u7184\u706f\u3002\u4f46\u662f\u5b9e\u9645\u4e0a\uff0c\u56e0\u4e3a\u6559\u5ba4\u91cc\u7684\u706f\u662f\u58f0\u63a7\u7684\uff0c\u6240\u4ee5\u5e38\u5e38\u4e0d\u5230\u5341\u4e00\u70b9\u8bb8\u591a\u6ca1\u6709\u4eba\u7684\u6559\u5ba4\u5df2\u7ecf\u7184\u706f\u4e86\u3002<\/p>\n

\u67d0\u5929\u591c\u91cc\uff0c\u503c\u73ed\u5ba4\u7684\u963f\u59e8\u60f3\u8981\u4f60\u5e2e\u5979\u4f30\u7b97\u8fd8\u5269\u51e0\u4e2a\u6559\u5ba4\u91cc\u6709\u4eba\u3002\u5979\u4f1a\u544a\u8bc9\u4f60\u4e1c\u533a\u4e00\u6559\u4e00\u5171\u6709\u51e0\u5c42\u697c\uff0c\u6bcf\u5c42\u697c\u5206\u522b\u6709\u51e0\u95f4\u6559\u5ba4\uff0c\u6bcf\u95f4\u6559\u5ba4\u5206\u522b\u6709\u51e0\u6247\u7a97\uff0c\u4f60\u4eec\u7ad9\u5728\u95e8\u524d\u4e5f\u80fd\u770b\u5230\u6574\u680b\u697c\u6709\u54ea\u4e9b\u7a97\u6237\u91cc\u706f\u8fd8\u4eae\u7740\u3002\u53ea\u8981\u6709\u4e00\u4e2a\u7a97\u6237\u4eae\u7740\uff0c\u90a3\u4e48\u8fd9\u95f4\u623f\u95f4\u5c31\u662f\u6709\u4eba\u7684\u3002<\/p>\n

\u9898\u76ee\u94fe\u63a5<\/h3>\n

https:\/\/citel.bjtu.edu.cn\/acm\/problem\/1927<\/a><\/p>\n

\u8f93\u5165\u6570\u636e<\/h3>\n

\u7b2c\u4e00\u884c\u4e00\u4e2a\u6574\u6570 n (1\u2264n\u2264200)\uff0c\u8868\u793a\u6559\u5b66\u697c\u7684\u5c42\u6570\u3002<\/p>\n

\u7b2c\u4e8c\u884c\u5f00\u59cb n \u884c\uff0c\u6bcf\u884c\u7b2c\u4e00\u4e2a\u6570 ki (1\u2264ki\u2264200) \u4ee3\u8868\u8be5\u5c42\u7684\u6559\u5ba4\u6570\u76ee\u3002
\n\u63a5\u4e0b\u6765 ki \u4e2a\u6570\uff0c\u5206\u522b\u4ee3\u8868\u8be5\u5c42\u6bcf\u95f4\u6559\u5ba4\u7684\u7a97\u6237\u6570\u91cf fj (1\u2264fj\u226410)\u3002<\/p>\n

\u63a5\u4e0b\u6765 n \u884c\uff0c\u7b2c i \u884c\u6709 \u2211kij=1fj \u4e2a\u6570\u5b57 x(i,j)\u2208{0,1}\uff0c1 \u4ee3\u8868\u8fd9\u6247\u7a97\u6237\u4eae\u7740\u3002<\/p>\n

\u8f93\u51fa\u6570\u636e<\/h3>\n

\u4e00\u4e2a\u6574\u6570\uff0c\u8fd8\u6709\u706f\u5f00\u7740\u7684\u623f\u95f4\u7684\u6570\u76ee\u3002<\/p>\n

\u6837\u4f8b\u8f93\u5165<\/h3>\n
5\n3 1 1 2\n2 1 4\n6 3 1 1 1 2 2\n5 1 1 2 1 1\n6 2 2 2 2 2 2\n0 0 0 0\n1 0 1 0 1\n1 0 1 0 0 0 0 0 0 0\n0 0 0 0 0 0\n0 0 0 0 0 0 0 0 0 0 0 0\n<\/code><\/pre>\n
\u6837\u4f8b\u8f93\u51fa<\/h3>\n
3\n<\/code><\/pre>\n
\u6837\u4f8b\u8bf4\u660e<\/h3>\n
\u7b2c 2 \u5c42\u7684\u4e24\u95f4\u6559\u5ba4\u548c\u7b2c 3 \u5c42\u7684\u7b2c\u4e00\u95f4\u6559\u5ba4\u6709\u706f\u4eae\u7740\uff0c\u5171 3 \u4e2a\u623f\u95f4\u3002<\/p>\n
\u95ee\u9898\u5206\u6790<\/h3>\n
\u6c34\u9898\uff0c\u5199\u4ee3\u7801\u7684\u65f6\u5019\u7a0d\u5fae\u8ba4\u771f\u4e00\u70b9\u5c31ok<\/p>\n
AC\u4ee3\u7801<\/h3>\n
#include <bits\/stdc++.h>\nusing namespace std;\n\nint k[205], f[205][205];\nint main()\n{\n    int n, i, j, m, num = 0, x;\n    cin >> n;\n    for (i = 0; i < n; i++)\n    {\n        cin >> k[i];\n        for (j = 0; j < k[i]; j++)\n            cin >> f[i][j];\n    }\n    for (i = 0; i < n; i++)\n    {\n        for (j = 0; j < k[i]; j++)\n        {\n            bool first = true;\n            for (m = 0; m < f[i][j]; m++)\n            {\n                cin >> x;\n                if (x == 1 && first)\n                {\n                    num++;\n                    first = false;\n                }\n            }\n        }\n    }\n    cout << num << endl;\n    return 0;\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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