{"id":59,"date":"2011-08-27T07:50:17","date_gmt":"2011-08-27T07:50:17","guid":{"rendered":"http:\/\/sxkdz.0ginr.com\/blog\/?p=59"},"modified":"2011-08-27T08:37:11","modified_gmt":"2011-08-27T08:37:11","slug":"%e5%8a%a8%e6%80%81%e8%a7%84%e5%88%92%e7%bb%83%e4%b9%a0%e9%a2%98%e6%bd%9c%e6%b0%b4","status":"publish","type":"post","link":"https:\/\/sxkdz.0ginr.com\/blog\/?p=59","title":{"rendered":"[\u52a8\u6001\u89c4\u5212\u7ec3\u4e60\u9898]\u6f5c\u6c34"},"content":{"rendered":"<p>\u3010\u95ee\u9898\u63cf\u8ff0\u3011<br \/>\n\u6f5c\u6c34\u5458\u7528\u7279\u6b8a\u7684\u88c5\u5907\u6f5c\u6c34\uff0c\u9700\u8981\u4e24\u4e2a\u5bb9\u5668\u7684\u94a2\u74f6\uff1a\u4e00\u4e2a\u88c5\u6c27\u6c14\uff0c\u53e6\u4e00\u4e2a\u88c5\u6c2e\u6c14\u3002\u6839\u636e\u6f5c\u6c34\u5458\u8981\u5f85\u5728\u6c34\u4e0b\u7684\u65f6\u95f4\u548c\u6240\u6f5c\u7684\u6df1\u5ea6\uff0c\u4ed6\u9700\u8981\u4e0d\u540c\u91cf\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\u3002\u63d0\u4f9b\u7ed9\u6f5c\u6c34\u5458\u4e00\u5b9a\u6570\u91cf\u7684\u94a2\u74f6\uff0c\u6bcf\u4e2a\u94a2\u74f6\u7531\u5b83\u7684\u91cd\u91cf\u548c\u5b83\u6240\u5bb9\u7eb3\u7684\u6c14\u4f53\u7684\u4f53\u79ef\u63cf\u8ff0\u3002\u4e3a\u4e86\u5b8c\u6210\u4efb\u52a1\uff0c\u6f5c\u6c34\u5458\u9700\u8981\u7279\u5b9a\u91cf\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\uff0c\u9700\u8981\u6c42\u4ed6\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u7684\u94a2\u74f6\u7684\u6700\u5c11\u91cd\u91cf\u662f\u591a\u5c11\uff1f<br \/>\n\u4f8b\u5982\uff0c\u6f5c\u6c34\u5458\u80fd\u591f\u4f7f\u7528\u76845\u4e2a\u94a2\u74f6\u63cf\u8ff0\u5982\u4e0b\uff0c\u6bcf\u4e2a\u63cf\u8ff0\u5305\u542b\uff1a\u6c27\u6c14\u7684\u4f53\u79ef\uff0c\u6c2e\u6c14\u7684\u4f53\u79ef\uff08\u6bcf\u4e2a\u503c\u90fd\u662f\u4ee5\u5347\u4e3a\u5355\u4f4d\uff09\u548c\u94a2\u74f6\u7684\u91cd\u91cf\u3002<br \/>\n3 36 120<br \/>\n10 25 129<br \/>\n5 50 250<br \/>\n1 45 130<br \/>\n4 20 119<br \/>\n\u5982\u679c\u6f5c\u6c34\u5458\u9700\u89815\u5347\u6c27\u6c14\u548c60\u5347\u6c2e\u6c14\uff0c\u90a3\u4e48\u4ed6\u5fc5\u987b\u5e26\u4e24\u4e2a\u603b\u91cd\u91cf\u4e3a249\u7684\u94a2\u74f6\uff08\u4f8b\u5b50\u4e2d\u7684\u7b2c1\u4e0e\u7b2c2\u6216\u8005\u7b2c4\u4e0e\u7b2c5\uff09\u3002<\/p>\n<p>\u3010\u4efb\u52a1\u3011<br \/>\n\u8bfb\u5165\u6f5c\u6c34\u5458\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\u7684\u9700\u6c42\u91cf\uff0c\u63d0\u4f9b\u7684\u94a2\u74f6\u7684\u6570\u76ee\u53ca\u5b83\u4eec\u7684\u63cf\u8ff0\uff1b<br \/>\n\u8ba1\u7b97\u6f5c\u6c34\u5458\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u8981\u7684\u94a2\u74f6\u6700\u5c11\u91cd\u91cf\uff1b<br \/>\n\u6ce8\uff1a\u63d0\u4f9b\u7684\u94a2\u74f6\u603b\u80fd\u591f\u5b8c\u6210\u7ed9\u5b9a\u7684\u4efb\u52a1\u3002\u00a0<br \/>\n\u00a0\u00a0\u00a0<br \/>\n\u3010\u8f93\u5165\u683c\u5f0f\u3011<br \/>\n\u7b2c\u4e00\u884c\u6709\u4e24\u4e2a\u6574\u6570T\uff0cA\uff0c\u5b83\u4eec\u7531\u7a7a\u683c\u9694\u5f00\uff0c1\u2264T\u2264100\uff0c1\u2264A\u2264100\uff0c\u5b83\u4eec\u5206\u522b\u8868\u793a\u6c27\u6c14\u7684\u4f53\u79ef\u548c\u6c2e\u6c14\u7684\u4f53\u79ef\uff0c\u8fd9\u4e9b\u662f\u5b8c\u6210\u4efb\u52a1\u9700\u8981\u7684\u3002\u7b2c\u4e8c\u884c\u6709\u4e00\u4e2a\u6574\u6570N\uff0c1\u2264N\u22641000\uff0c\u8868\u793a\u63d0\u4f9b\u94a2\u74f6\u7684\u603b\u6570\u91cf\uff0c\u63a5\u4e0b\u6765\u7684N\u884c\u662f\u5bf9\u6bcf\u4e2a\u94a2\u74f6\u7684\u63cf\u8ff0\uff0c\u7b2cI+2\u884c\u5305\u542b3\u4e2a\u6574\u6570\uff0cTI\uff0cAI\uff0cWI\uff0c\u5b83\u4eec\u7531\u7a7a\u683c\u9694\u5f00\uff0c\u5176\u4e2d1\u2264TI\u2264100\uff0c1\u2264AI\u2264100\uff0c1\u2264WI\u2264800\uff1b\u5b83\u4eec\u5206\u522b\u8868\u793a\u7b2cI\u4e2a\u94a2\u74f6\u5185\u6c27\u6c14\u7684\u4f53\u79ef\u3001\u6c2e\u6c14\u7684\u4f53\u79ef\u4ee5\u53ca\u8be5\u94a2\u74f6\u7684\u91cd\u91cf\uff0c1\u2264I\u2264N\u3002\u00a0\u00a0<\/p>\n<p>\u3010\u8f93\u51fa\u683c\u5f0f\u3011<br \/>\n\u8f93\u51fa\u53ea\u6709\u4e00\u4e2a\u6574\u6570\uff0c\u5c31\u662f\u6f5c\u6c34\u5458\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u94a2\u74f6\u7684\u6700\u5c11\u603b\u91cd\u91cf\u3002\u00a0<\/p>\n<p>\u3010\u6837\u4f8b\u8f93\u5165\u3011<br \/>\n5 60<br \/>\n5<br \/>\n3 36 120<br \/>\n10 25 129<br \/>\n5 50 250<br \/>\n1 45 130<br \/>\n4 20 119<\/p>\n<p>\u3010\u6837\u4f8b\u8f93\u51fa\u3011<br \/>\n249<\/p>\n<p>\u3010\u65f6\u95f4\u9650\u5236\u3011<br \/>\n\u6bcf\u4e2a\u6d4b\u8bd5\u70b91s\u3002<\/p>\n<p>\u3010\u89e3\u6790\u3011<\/p>\n<blockquote>\n<ul>\n<li>\u72b6\u6001\uff1af[j][k]\u8868\u793a\u6c27\u6c14\u4e3aj\uff0c\u6c2e\u6c14\u4e3ak\u65f6\u7684\u94a2\u74f6\u6700\u5c0f\u91cd\u91cf<\/li>\n<li>\u72b6\u6001\u8f6c\u79fb\u65b9\u7a0b\uff1af[j+t[i]][k+a[i]] = min(f[j+t[i]][k+a[i]], f[j][k]+c[i])<\/li>\n<li>\u7b54\u6848\uff1af[T][A]<\/li>\n<li>\u65f6\u95f4\u590d\u6742\u5ea6\uff1aO(N*T*A)<\/li>\n<\/ul>\n<\/blockquote>\n<p>[cpp]#include &lt;cstdio&gt;<br \/>\nint T, A, N, f[200][200], t[1020], a[1020], v[1020];<br \/>\nint main(void)<br \/>\n{<br \/>\n\u00a0\u00a0\u00a0 scanf(&#8220;%d%d%d&#8221;, &amp;T, &amp;A, &amp;N);<br \/>\n\u00a0\u00a0\u00a0 for (int i=1; i&lt;=N; ++i)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 scanf(&#8220;%d%d%d&#8221;, &amp;t[i], &amp;a[i], &amp;v[i]);<br \/>\n\u00a0\u00a0\u00a0 for (int i=0; i&lt;=T; ++i)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for (int j=0; j&lt;=A; ++j)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 f[i][j]=10000000;<br \/>\n\u00a0\u00a0\u00a0 f[0][0]=0;<br \/>\n\u00a0\u00a0\u00a0 for (int i=1; i&lt;=N; ++i)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for (int j=T; j&gt;=0; &#8211;j)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 for (int k=A; k&gt;=0; &#8211;k)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 {<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 int o1, o2;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if (t[i]+j &gt; T)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 o1=T;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 o1=t[i]+j;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if (a[i]+k &gt; A)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 o2=A;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 o2=a[i]+k;<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if (f[o1][o2]&gt;f[j][k]+v[i])<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 f[o1][o2]=f[j][k]+v[i];<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }<br \/>\n\u00a0\u00a0\u00a0 printf(&#8220;%d\\n&#8221;, f[T][A]);<\/p>\n<p>\u00a0\u00a0\u00a0 return 0;<br \/>\n}<\/p>\n<p>[\/cpp]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u95ee\u9898\u63cf\u8ff0\u3011 \u6f5c\u6c34\u5458\u7528\u7279\u6b8a\u7684\u88c5\u5907\u6f5c\u6c34\uff0c\u9700\u8981\u4e24\u4e2a\u5bb9\u5668\u7684\u94a2\u74f6\uff1a\u4e00\u4e2a\u88c5\u6c27\u6c14\uff0c\u53e6\u4e00\u4e2a\u88c5\u6c2e\u6c14\u3002\u6839\u636e\u6f5c\u6c34\u5458\u8981\u5f85\u5728\u6c34\u4e0b\u7684\u65f6\u95f4\u548c\u6240\u6f5c\u7684\u6df1\u5ea6\uff0c\u4ed6\u9700\u8981\u4e0d\u540c\u91cf\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\u3002\u63d0\u4f9b\u7ed9\u6f5c\u6c34\u5458\u4e00\u5b9a\u6570\u91cf\u7684\u94a2\u74f6\uff0c\u6bcf\u4e2a\u94a2\u74f6\u7531\u5b83\u7684\u91cd\u91cf\u548c\u5b83\u6240\u5bb9\u7eb3\u7684\u6c14\u4f53\u7684\u4f53\u79ef\u63cf\u8ff0\u3002\u4e3a\u4e86\u5b8c\u6210\u4efb\u52a1\uff0c\u6f5c\u6c34\u5458\u9700\u8981\u7279\u5b9a\u91cf\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\uff0c\u9700\u8981\u6c42\u4ed6\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u7684\u94a2\u74f6\u7684\u6700\u5c11\u91cd\u91cf\u662f\u591a\u5c11\uff1f \u4f8b\u5982\uff0c\u6f5c\u6c34\u5458\u80fd\u591f\u4f7f\u7528\u76845\u4e2a\u94a2\u74f6\u63cf\u8ff0\u5982\u4e0b\uff0c\u6bcf\u4e2a\u63cf\u8ff0\u5305\u542b\uff1a\u6c27\u6c14\u7684\u4f53\u79ef\uff0c\u6c2e\u6c14\u7684\u4f53\u79ef\uff08\u6bcf\u4e2a\u503c\u90fd\u662f\u4ee5\u5347\u4e3a\u5355\u4f4d\uff09\u548c\u94a2\u74f6\u7684\u91cd\u91cf\u3002 3 36 120 10 25 129 5 50 250 1 45 130 4 20 119 \u5982\u679c\u6f5c\u6c34\u5458\u9700\u89815\u5347\u6c27\u6c14\u548c60\u5347\u6c2e\u6c14\uff0c\u90a3\u4e48\u4ed6\u5fc5\u987b\u5e26\u4e24\u4e2a\u603b\u91cd\u91cf\u4e3a249\u7684\u94a2\u74f6\uff08\u4f8b\u5b50\u4e2d\u7684\u7b2c1\u4e0e\u7b2c2\u6216\u8005\u7b2c4\u4e0e\u7b2c5\uff09\u3002 \u3010\u4efb\u52a1\u3011 \u8bfb\u5165\u6f5c\u6c34\u5458\u7684\u6c27\u6c14\u548c\u6c2e\u6c14\u7684\u9700\u6c42\u91cf\uff0c\u63d0\u4f9b\u7684\u94a2\u74f6\u7684\u6570\u76ee\u53ca\u5b83\u4eec\u7684\u63cf\u8ff0\uff1b \u8ba1\u7b97\u6f5c\u6c34\u5458\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u8981\u7684\u94a2\u74f6\u6700\u5c11\u91cd\u91cf\uff1b \u6ce8\uff1a\u63d0\u4f9b\u7684\u94a2\u74f6\u603b\u80fd\u591f\u5b8c\u6210\u7ed9\u5b9a\u7684\u4efb\u52a1\u3002\u00a0 \u00a0\u00a0\u00a0 \u3010\u8f93\u5165\u683c\u5f0f\u3011 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