{"id":223702,"date":"2012-01-27T16:41:23","date_gmt":"2012-01-27T08:41:23","guid":{"rendered":"http:\/\/blog.yangzhe1991.org\/?p=223702"},"modified":"2014-03-14T19:58:05","modified_gmt":"2014-03-14T11:58:05","slug":"2011%e5%b9%b412%e6%9c%88%e6%9c%88%e8%b5%9b%e5%87%ba%e9%a2%98%e6%8a%a5%e5%91%8a","status":"publish","type":"post","link":"https:\/\/yangzhe1991.org\/blog\/2012\/01\/2011%e5%b9%b412%e6%9c%88%e6%9c%88%e8%b5%9b%e5%87%ba%e9%a2%98%e6%8a%a5%e5%91%8a\/","title":{"rendered":"2011\u5e7412\u6708\u6708\u8d5b\u51fa\u9898\u62a5\u544a"},"content":{"rendered":"<p>\u4e0d\u77e5\u4e3a\u5565\u6ca1\u4e86\u5c45\u7136\u2026\u2026\u2026\u2026\u611f\u8c22google\u5feb\u7167\uff0c\u6015\u518d\u51fa\u4e8b\u6211\u8fd8\u662f\u8f6c\u5230\u8fd9\u4e00\u4e0b\u5427\u2026\u2026\u2026\u2026<\/p>\n<p><!--more--><\/p>\n<p>\u672c\u6765\u51c6\u59078\u9898\u7684\uff0c\u6700\u540e\u4e00\u9898\u60f3\u51fa\u4e00\u4e2a\u8ba1\u7b97\u6bd4\u8f83\u7e41\u7410\u7b97\u5b8c\u5c31\u76f4\u63a5\u5f88\u7b80\u5355\u7684coding\u7684\u6570\u5b66\u9898\uff0c\u4f46\u60f3\u6765\u60f3\u53bb\u51fa\u4e0d\u6765\u2026\u2026\u4e8e\u662f\u5c317\u9898\u4e86\u3002<\/p>\n<p>\u7279\u522b\u6c34\u7684\u9898\u6bd4\u8f83\u5c11\uff0c\u4f46\u6211\u89c9\u5f97\u5982\u679c\u7b2c\u4e00\u9898\u77e5\u9053long long\u4e4b\u540e\uff0c\u51fa\u4e24\u9898\u4e0d\u5e94\u8be5\u662f\u95ee\u9898\uff0c\u4f46\u597d\u50cf\u8fd9\u6837\u7684\u5927\u4e00\u65b0\u751f\u4e5f\u4e0d\u7b97\u591a\u3002\u4ece\u6392\u540d\u4e0a\u770b\uff0c\u7b2c\u4e00\u7684\u5362\u5927\u795e\u662f\u54c8\u5de5\u5927\u6709\u60c5\u53c2\u8d5b\u7684\uff0c\u8ba9\u5927\u5bb6\u770b\u770b\u4e9a\u6d32\u8d5b\u94f6\u724c\u7684\u5b9e\u529b\u3002\u4e1c\u5927\u7b2c\u4e00\u540d\u662f\u552f\u4e00\u4e00\u4e2a\u53c2\u52a0\u4eca\u5e74regional\u768410\u7ea7\u7f57\u8000\u71ca\uff0c\u53ef\u4ee5\u8bf4\u5c31\u662f\u73b0\u5f79\u9009\u624b\u4e2d\u660e\u5e74\u6700\u6709\u524d\u9014\u7684\u4e86\u3002\u65b0\u624b\u7b2c\u4e00\u540d\u662f\u603b\u7b2c\u4e09\u768410\u7ea7\u9093\u6500\u5cf0\uff0c\u4eba\u5bb6\u53ef\u662f\u59b9\u5b50\uff0c\u6bd4\u5927\u591a\u6570\u7537\u4eba\u5f3a\u591a\u4e86\u300211\u7ea7\u201c\u65b0\u661f\u201d\u7b2c\u4e00\u540d\u662f\u603b\u7b2c\u516d\u7684\u674e\u91d1\u9e4f\uff0c\u80fd\u8fc7G\u9898\u8fd8\u662f\u975e\u5e38\u5389\u5bb3\u7684\uff0c\u524d\u9014\u65e0\u91cf~<\/p>\n<p>\u8be6\u7ec6\u6700\u7ec8\u6392\u540d\u548c\u79ef\u5206\u5c06\u5728\u7a0d\u540e\u53d1\u5e03\u3002<\/p>\n<p>A\u9898\u5c31\u662flong long\u7684\u95ee\u9898\u3002\u5218\u8001\u5e08\u8bf4\u4ed6\u7b2c\u4e00\u5468\u5c31\u7559\u4f5c\u4e1a\u8ba9\u5927\u5bb6\u67e5C\/C++\u6807\u51c6\u6570\u636e\u7c7b\u578b\uff0c\u8f6f\u4ef6\u7684\u57f9\u8bad\u4e5f\u63d0\u5230\u8fc7long long\uff0c\u786e\u5b9e\u4e0d\u5e94\u8be5\u8fd9\u4e48\u591a\u4eba\u4e0d\u77e5\u9053\u3002\u540e\u6765\u6211\u6015\u5927\u5bb6\u90fd0\u9898\u5c31\u76f4\u63a5\u544a\u8bc9\u5404\u4f4d\u600e\u4e48\u5199\u4e86\uff0c\u6240\u4ee5\u5bfc\u81f4\u5f88\u591a\u4eba\u90fd\u662f1\u5c0f\u65f640\u5206\u8fc7\u7684\uff0c\u8fd9\u6837\u8c01\u4e4b\u524d\u6ca1\u63d0\u4ea4\u8c01\u5c31\u9760\u524d\uff0c\u6240\u4ee5\u8fd9\u9898\u7684\u6392\u540d\u6709\u70b9\u6ca1\u542b\u91d1\u91cf\u3002\u4e0d\u8fc7\u603b\u4f53\u4e0a\u5f71\u54cd\u4e0d\u5927\u3002<\/p>\n<p>B\u9898\u4e5f\u5f88\u6c34\uff0c\u8bfb\u5165\u5224\u65ad\u662f\u5426\u662f11\u7ea7\uff0c\u518d\u5224\u65ad\u662f\u5426\u91cd\u590d\u548c\u6027\u522b\uff0c\u8f93\u51fa\u5373\u53ef\u3002\u6ca1\u505a\u51fa\u6765\u7684\u518d\u4ed4\u7ec6\u770b\u4e0b\u4ee3\u7801\u6709\u4ec0\u4e48\u95ee\u9898\u3002<\/p>\n<p>\u524d\u4e24\u9898\u5c5e\u4e8e\u5fc5\u4f1a\u4e5f\u662f\u57fa\u672c\u6240\u670911\u7ea7\u53ea\u4f1a\u7684\u4e24\u9898\uff0c\u786e\u5b9e\u6574\u4f53\u96be\u5ea6\u5bf9\u4e8e\u65b0\u624b\u5927\u4e86\u70b9\uff0c\u8fd9\u4e2a\u602a\u6211\u4e86\u3002\u3002\u3002\u56e0\u4e3a\u8fc7\u4e8e\u57fa\u7840\u6240\u4ee5\u4e0d\u53d1\u4ee3\u7801\u4e86\uff0c\u81ea\u5df1\u5b9e\u73b0\u3002<\/p>\n<p>C\u9898\u5c5e\u4e8e\u6a21\u62df\u9898\uff0c\u601d\u8def\u5f88\u6e05\u6670\uff0c\u800c\u4e14\u56e0\u4e3a\u90fd\u662f\u4eba\u8138\u7684\u7167\u7247\u663e\u7136\u4e0d\u5b58\u5728\u4fe9\u773c\u775b\u5728\u9f3b\u5b50\u4e00\u5934\u7684\u60c5\u51b5\uff0c\u5148\u628a\u8138\u7684\u8f6e\u5ed3\u5224\u65ad\u51fa\u6765\u518d\u5206\u522b\u5224\u65ad\u5404\u4e2a\u5668\u5b98\u7684\u6761\u4ef6\u5c31\u53ef\u4ee5\u4e86\u3002\u6bd4\u8d5b\u7684\u65f6\u5019\u5c45\u7136\u53d1\u73b0\u6709\u4eba\u4f01\u56fe\u5168\u8f93\u51faNo\u9a97\u5206\uff0c\u6570\u636e\u663e\u7136\u4e0d\u4f1a\u8fd9\u4e48\u5f31\u2026\u2026<br \/>\n\u53d1\u4e0b\u5362\u5927\u795e\u7684\u4ee3\u7801\u3002<br \/>\n#include &lt;iostream&gt;<br \/>\n#include &lt;cstdio&gt;<br \/>\n#include &lt;cstring&gt;<br \/>\n#include &lt;algorithm&gt;<br \/>\n#include &lt;cmath&gt;<br \/>\n#include &lt;vector&gt;<br \/>\nusing namespace std;<br \/>\nconst int step[][2] = {\u00a0\u00a0{0,1} , {0,-1} ,{1, 0}, {-1,0} };<br \/>\nchar mat[21][41];<br \/>\nbool chk[21][41];<br \/>\nchar s1[41],s2[41],buf[41];<br \/>\nint Left[21],Right[21],h[41];<br \/>\nvoid dfs(int i,int j,int d)<br \/>\n{<br \/>\nif(chk[i][j]) return;<br \/>\nchk[i][j] = true;<br \/>\nmat[i][j] = &#8216;0&#8217;;<br \/>\nfor(int k = 0 ; k &lt; 4 ; k++)<br \/>\n{<br \/>\nint ty = i + step[k][0];<br \/>\nint tx = j + step[k][1];<br \/>\nif(ty&gt;=0 &amp;&amp; ty &lt; 20 &amp;&amp; tx&gt;=0 &amp;&amp; tx &lt; 40)<br \/>\n{<br \/>\nif(d == 1)<br \/>\n{<br \/>\nif(mat[ty][tx] == &#8216;1&#8217;)<br \/>\ndfs(ty,tx,d);<br \/>\n}<br \/>\nelse<br \/>\n{<br \/>\nif(mat[ty][tx] == &#8216;0&#8217;)<br \/>\ndfs(ty,tx,d);<br \/>\nelse<br \/>\ndfs(ty,tx,1);<br \/>\n}<br \/>\n}<br \/>\n}<\/p>\n<p>}<br \/>\nvoid debug()<br \/>\n{<br \/>\nfor(int i = 0; i&lt; 20 ; i ++)<br \/>\nprintf(&#8220;%sn&#8221;,mat[i]);<br \/>\n}<br \/>\nvoid dfs(int i ,int j,vector&lt;pair&lt;int,int&gt; &gt;&amp; v)<br \/>\n{<br \/>\nif(chk[i][j]) return;<br \/>\nchk[i][j] = true;<br \/>\nmat[i][j] = &#8216; &#8216;;<br \/>\nv.push_back(make_pair(i ,j));<br \/>\nfor(int k = 0 ; k &lt; 4 ; k++)<br \/>\n{<br \/>\nint ty = i + step[k][0];<br \/>\nint tx = j + step[k][1];<br \/>\nif(ty&gt;=0 &amp;&amp; ty &lt; 20 &amp;&amp; tx&gt;=0 &amp;&amp; tx &lt; 40)<br \/>\n{<br \/>\nif(mat[ty][tx] == &#8216;1&#8217;)<br \/>\ndfs(ty,tx,v);<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\nvoid gao(int i,int j)<br \/>\n{<br \/>\nif(chk[i][j]) return;<br \/>\nchk[i][j] = true;<br \/>\nmat[i][j] =&#8217; &#8216;;<br \/>\nLeft[i] = min(Left[i],j);<br \/>\nRight[i] = max(Right[i],j);<br \/>\nfor(int k = 0 ; k &lt; 4 ; k++)<br \/>\n{<br \/>\nint ty = i + step[k][0];<br \/>\nint tx = j + step[k][1];<br \/>\nif(ty&gt;=0 &amp;&amp; ty &lt; 20 &amp;&amp; tx&gt;=0 &amp;&amp; tx &lt; 40)<br \/>\n{<br \/>\nif(mat[ty][tx] == &#8216;1&#8217;)<br \/>\ngao(ty,tx);<br \/>\n}<br \/>\n}<br \/>\n}<\/p>\n<p>void checkeyebrow(bool&amp; ok,int&amp; line)<br \/>\n{<br \/>\nfor(; line &lt; 20 ; line ++)<br \/>\n{<br \/>\nfor(int i = 0 ; i &lt; 40 ; i ++)<br \/>\nbuf[40 &#8211; i &#8211; 1] = mat[line][i];<br \/>\nbuf[40] = 0;<br \/>\nif(sscanf(mat[line],&#8221;%s %s&#8221;,s1,s2) == 2)<br \/>\n{<br \/>\nsscanf(mat[line],&#8221;%s&#8221;,s1);<br \/>\nsscanf(buf,&#8221;%s&#8221;,s2);<br \/>\nif(strcmp(s1,s2))<br \/>\nok = false;<br \/>\nfor(int i = 0 ; i &lt; 40 ; i++)<br \/>\nmat[line][i] = &#8216; &#8216;;<br \/>\nbreak;<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\nvoid checkeye(bool&amp; ok,int&amp; line)<br \/>\n{<br \/>\nfor(; line &lt; 20 ; line ++)<br \/>\n{<br \/>\nif(sscanf(mat[line],&#8221;%s %s&#8221;,s1,s2) == 2)<br \/>\n{<br \/>\nvector&lt; pair&lt;int,int&gt; &gt; v1,v2;<br \/>\nfor(int i = 0 ; i &lt; 40 ; i ++)<br \/>\n{<br \/>\nif(mat[line][i] == &#8216;1&#8217;)<br \/>\n{<br \/>\nmemset(chk,0,sizeof(chk));<br \/>\ndfs(line,i,v1);<br \/>\nbreak;<br \/>\n}<br \/>\n}<br \/>\nfor(int i = 40 &#8211; 1 ; i &gt;=0 ; i &#8211;)<br \/>\n{<br \/>\nif(mat[line][i] == &#8216;1&#8217;)<br \/>\n{<br \/>\nmemset(chk,0,sizeof(chk));<br \/>\ndfs(line,i,v2);<br \/>\nbreak;<br \/>\n}<br \/>\n}<br \/>\nsort(v1.begin() , v1.end());<br \/>\nsort(v2.begin() , v2.end());<br \/>\nif(v1.size()!= v2.size())<br \/>\n{<br \/>\nok = false;<br \/>\nreturn;<br \/>\n}<br \/>\nfor(int i = 1; i &lt; v1.size() ; i ++)<br \/>\n{<br \/>\nif( (v1[i].first &#8211; v1[0].first != v2[i].first &#8211; v2[0].first) || (v1[i].second &#8211; v1[0].second\u00a0\u00a0!= v2[i].second\u00a0\u00a0&#8211; v2[0].second ))<br \/>\n{<br \/>\nok = false;<br \/>\nbreak;<br \/>\n}<br \/>\n}<br \/>\nreturn;<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\nvoid checknose(bool&amp; ok,int&amp; line)<br \/>\n{<br \/>\nfor(; line &lt; 20 ; line ++)<br \/>\n{<br \/>\nif(sscanf(mat[line],&#8221;%s&#8221;,s1) == 1)<br \/>\n{<br \/>\nfor(int i = 0 ; i &lt; 40 ; i++)<br \/>\n{<br \/>\nif(mat[line][i] == &#8216;1&#8217;)<br \/>\n{<br \/>\nmemset(chk,0,sizeof(chk));<br \/>\nmemset(Right,-1,sizeof(Right));<br \/>\nmemset(Left,0x3f,sizeof(Left));<br \/>\ngao(line ,i);<br \/>\nfor(int j = line + 1; j &lt; 20; j ++)<br \/>\n{<br \/>\nif(Right[j] == -1)<br \/>\nbreak;<br \/>\nif( (Left[j] + Right[j]) != (Left[line] + Right[line]))<br \/>\n{<br \/>\nok = false;<br \/>\nbreak;<br \/>\n}<br \/>\n}<br \/>\nreturn;<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\n}<br \/>\nvoid checkmouth(bool&amp; ok,int&amp; line)<br \/>\n{<br \/>\nmemset(h,-1,sizeof(h));<br \/>\nfor(int i = 0 ; i &lt; 20 ; i ++)<br \/>\nfor(int j = 0; j &lt; 40 ; j++)<br \/>\nif(mat[i][j] == &#8216;1&#8217;)<br \/>\n{<br \/>\nmat[i][j] =&#8217; &#8216;;<br \/>\nif(h[j] == -1)<br \/>\nh[j] = i;<br \/>\nelse<br \/>\nh[j] = min(h[i],i);<br \/>\n}<br \/>\nint i = 0;<br \/>\nwhile(h[i] == -1)<br \/>\ni++;<br \/>\nint j = i;<br \/>\nwhile(h[j] != -1)<br \/>\nj++;<br \/>\nj&#8211;;<br \/>\nif( (j &#8211; i) % 2 == 0)<br \/>\n{<br \/>\nint mid = (i + j) \/ 2;<br \/>\nif(h[i] &gt;= h[mid] || h[j] &gt;= mid)<br \/>\n{<br \/>\nok = false;<br \/>\n}<br \/>\n}<br \/>\nelse<br \/>\n{<br \/>\nint mid = (i + j) \/ 2;<br \/>\nif(h[i] &gt;= h[mid] || h[j] &gt;= mid)<br \/>\n{<br \/>\nok = false;<br \/>\n}<br \/>\nmid = (i + j) \/ 2 + 1;<br \/>\nif(h[i] &gt;= h[mid] || h[j] &gt;= mid)<br \/>\n{<br \/>\nok = false;<br \/>\n}<br \/>\n}<br \/>\nreturn;<br \/>\n}<br \/>\nint main()<br \/>\n{<br \/>\nint t;<br \/>\nscanf(&#8220;%d&#8221;,&amp;t);<br \/>\nwhile(t&#8211;)<br \/>\n{<br \/>\nfor(int i = 0; i&lt; 20; i ++)<br \/>\nscanf(&#8220;%s&#8221;,mat[i]);<br \/>\nmemset(chk,0,sizeof(chk));<br \/>\ndfs(0,0 , 0);<br \/>\nfor(int i = 0 ; i &lt; 20 ; i ++)<br \/>\nfor(int j = 0 ; j &lt; 40 ; j ++)<br \/>\nif(mat[i][j] == &#8216;0&#8217;)<br \/>\nmat[i][j] = &#8216; &#8216;;<br \/>\nint line = 0;<br \/>\nbool ok = true;<\/p>\n<p>checkeyebrow(ok,line);<br \/>\n\/\/debug();<br \/>\ncheckeye(ok,line);<br \/>\n\/\/debug();<br \/>\nchecknose(ok,line);<br \/>\n\/\/debug();<br \/>\ncheckmouth(ok,line);<br \/>\n\/\/debug();<br \/>\nok ? puts(&#8220;YES&#8221;) :puts(&#8220;No&#8221;);<br \/>\n}<br \/>\nreturn 0;<br \/>\n}<\/p>\n<p>\/**************************************************************<br \/>\nProblem: 1113<br \/>\nUser: luyi0619<br \/>\nLanguage: C++<br \/>\nResult: Accepted<br \/>\nTime:1 ms<br \/>\nMemory:1264 kb<br \/>\n****************************************************************\/<br \/>\n\u590d\u5236\u4ee3\u7801<br \/>\nD\u9898\u5c31\u662f\u4e2a\u7279\u522b\u88f8\u7684DP\u6709\u6728\u6709\u2026\u2026\u5927\u4e00\u4e0d\u4f1a\u7684\u6b63\u5e38\u4e3a\u5565\u6ca1\u4eba\u8fc7\u5462\u3002\u3001<br \/>\nN\u4e2a\u4eba\u5206\u6210M\u7ec4\uff0c\u5b50\u72b6\u6001\u80af\u5b9a\u5c31\u662f\u5c11\u4e8eN\u4e2a\u4eba\u5206\u6210M-1\u7ec4\uff0c\u51b3\u7b56\u662f\u5224\u65adM-1\u7ec4\u8ddf\u7b2cM\u7ec4\u5728\u54ea\u5206\u754c\u3002\u56e0\u6b64\u6700\u5916\u5c42\u4e24\u4e2a\u5faa\u73afN\u548cM\uff0c\u5148\u540e\u65e0\u6240\u8c13\u3002<br \/>\nf[n][m]=max{f[k][m-1]+mul(k+1,n)}<br \/>\nmul\u8868\u793a\u4ece\u7b2ck+1\u5230\u7b2cn\u4e2a\u7684\u4e58\u79ef\uff0c\u663e\u7136\u679a\u4e3ek\u4ece\u5927\u5f80\u5c0f\u5c31\u53ef\u4ee5\u76f4\u63a5\u5f97\u5230\u6bcf\u4e00\u6b65\u7684\u503c\u4e0d\u7528\u989d\u5916\u7b97\u4e86\uff0c\u56e0\u6b64\u6700\u540e\u590d\u6742\u5ea6\u662fn^2*m\u7684\u3002<br \/>\n\u6211\u7684\u4ee3\u7801\uff1a<br \/>\n#include&lt;iostream&gt;<br \/>\n#include&lt;cstdio&gt;<br \/>\n#include&lt;cstring&gt;<br \/>\nusing namespace std;<\/p>\n<p>long long a[100];<br \/>\nlong long f[100][15];<\/p>\n<p>int main()<br \/>\n{<br \/>\nint n,m;<br \/>\nwhile(scanf(&#8220;%d%d&#8221;,&amp;n,&amp;m)&amp;&amp;n&gt;0)<br \/>\n{<br \/>\nmemset(f,0,sizeof(f));<br \/>\nfor(int i=1;i&lt;=n;i++)<br \/>\n{<br \/>\nscanf(&#8220;%d&#8221;,&amp;a[i]);<br \/>\n}<br \/>\nf[1][1]=a[1];<br \/>\nfor(int i=2;i&lt;=n;i++)<br \/>\nf[i][1]=f[i-1][1]*a[i];<br \/>\nfor(int i=2;i&lt;=n;i++)<br \/>\nfor(int j=2;j&lt;=m;j++)<br \/>\n{<br \/>\nlong long mul=1;<br \/>\nfor(int k=i-1;k&gt;=j-1;k&#8211;)<br \/>\n{<br \/>\nmul*=a[k+1];<br \/>\nf[i][j]=max(f[i][j],f[k][j-1]+mul);<br \/>\n}<br \/>\n}<br \/>\nprintf(&#8220;%lldn&#8221;,f[n][m]);<br \/>\n}<\/p>\n<p>return 0;<br \/>\n}<br \/>\n\/**************************************************************<br \/>\nProblem: 1114<br \/>\nUser: admin<br \/>\nLanguage: C++<br \/>\nResult: Accepted<br \/>\nTime:8 ms<br \/>\nMemory:1272 kb<br \/>\n****************************************************************\/<br \/>\n\u590d\u5236\u4ee3\u7801<br \/>\nE\u9898\u662f\u88f8\u6700\u5c0f\u751f\u6210\u6811\uff0c\u53ea\u8981\u4f1a\u7684\u90fd\u4e0d\u5e94\u8be5\u505a\u4e0d\u51fa\u6765\u3002OIer\u5982\u679c\u4e0d\u77e5\u9053\u600e\u4e48\u7528\u6a21\u7248\u81ea\u5df1\u5199\u4e5f\u4e0d\u5e94\u8be5\u662f\u95ee\u9898\uff0c\u5c31\u770b\u80fd\u4e0d\u80fd\u56de\u5fc6\u8d77\u6765\u6216\u8005\u6700\u8fd1\u6709\u6ca1\u6709\u590d\u4e60\u4e86\u2026\u2026\u6ce8\u610f\u8f93\u5165\u6570\u636e\u4e0d\u4e00\u5b9a\u975e\u662f\u6574\u6570\u3002<br \/>\n#include&lt;cstdio&gt;<br \/>\n#include&lt;iostream&gt;<br \/>\n#include&lt;math.h&gt;<br \/>\nusing namespace std;<\/p>\n<p>double px[1005],py[1005];<br \/>\ndouble mat[1005][1005];<\/p>\n<p>#define MAXN 1005<\/p>\n<p>#define inf 1000000000<\/p>\n<p>typedef double elem_t;<br \/>\nelem_t prim(int n,elem_t mat[][MAXN],int* pre){<br \/>\nelem_t min[MAXN],ret=0;<br \/>\nint v[MAXN],i,j,k;<br \/>\nfor (i=0;i&lt;n;i++)<br \/>\nmin[i]=inf,v[i]=0,pre[i]=-1;<br \/>\nfor (min[j=0]=0;j&lt;n;j++){<br \/>\nfor (k=-1,i=0;i&lt;n;i++)<br \/>\nif (!v[i]&amp;&amp;(k==-1||min[i]&lt;min[k]))<br \/>\nk=i;<br \/>\nfor (v[k]=1,ret+=min[k],i=0;i&lt;n;i++)<br \/>\nif (!v[i]&amp;&amp;mat[k][i]&lt;min[i])<br \/>\nmin[i]=mat[pre[i]=k][i];<br \/>\n}<br \/>\nreturn ret;<br \/>\n}<\/p>\n<p>int main()<br \/>\n{<br \/>\nint n;<br \/>\nwhile(scanf(&#8220;%d&#8221;,&amp;n)&gt;0)<br \/>\n{<br \/>\nfor(int i=0;i&lt;n;i++)<br \/>\nscanf(&#8220;%lf%lf&#8221;,&amp;px[i],&amp;py[i]);<br \/>\nfor(int i=0;i&lt;n;i++)<br \/>\nfor(int j=0;j&lt;n;j++)<br \/>\n{<br \/>\nmat[i][j]=sqrt((px[i]-px[j])*(px[i]-px[j])+(py[i]-py[j])*(py[i]-py[j]));<br \/>\n}<br \/>\nint pre[MAXN];<br \/>\nprintf(&#8220;%.2fn&#8221;,prim(n,mat,pre));<\/p>\n<p>}<\/p>\n<p>return 0;<br \/>\n}<br \/>\n\/**************************************************************<br \/>\nProblem: 1115<br \/>\nUser: admin<br \/>\nLanguage: C++<br \/>\nResult: Accepted<br \/>\nTime:156 ms<br \/>\nMemory:9168 kb<br \/>\n****************************************************************\/<br \/>\n\u590d\u5236\u4ee3\u7801<br \/>\nF\u9898\u770b\u4e0a\u53bb\u7279\u522b\u590d\u6742\uff0c\u5b9e\u9645\u4e0a\u7279\u522b\u7b80\u5355\u3002\u770b\u4e0a\u53bb\u662f\u8ba1\u7b97\u51e0\u4f55\uff0c\u5b9e\u9645\u4e0a\u7b49\u4e8e\u6a21\u62df\u9898\u3002\u770b\u4e0a\u53bb\u4e0d\u77e5\u9053\u600e\u4e48\u627e\u70b9\u7684\u4f4d\u7f6e\u8ddf\u65b9\u5411\uff0c\u4f46\u5b9e\u9645\u4e0a\u663e\u7136\u4e34\u754c\u70b9\u5e94\u81f3\u5c11\u8ddf\u4e24\u4e2a\u591a\u8fb9\u5f62\u5904\u4e8e\u6070\u597d\u76f8\u5207\u7684\u72b6\u6001\uff0c\u6216\u8005\u8bf4\u5e94\u8be5\u81f3\u5c11\u8fc7\u5176\u4e2d\u4e24\u4e2a\u591a\u8fb9\u5f62\u7684\u67d0\u4e2a\u9876\u70b9\uff08\u60f3\u660e\u767d\u8fd9\u6b65\u5c31\u4e0d\u96be\u4e86\uff09\u3002\u4e8e\u662f\u76f4\u63a5\u679a\u4e3e\u4e24\u4e2a\u591a\u8fb9\u5f62\uff0c\u6bcf\u4e2a\u591a\u8fb9\u5f62\u679a\u4e3e\u4e00\u4e2a\u9876\u70b9\uff0c\u8fc7\u8fd9\u4fe9\u70b9\u7684\u76f4\u7ebf\u5148\u770b\u662f\u5426\u8fc7y\u8f74\u7279\u5b9a\u533a\u57df\uff0c\u7136\u540e\u679a\u4e3e\u5176\u4ed6\u591a\u8fb9\u5f62\u770b\u51e0\u4e2a\u76f8\u4ea4\u3002<br \/>\n\u7f57\u8000\u71ca\u7684\u4ee3\u7801\uff1a<br \/>\n#include&lt;stdio.h&gt;<br \/>\n#include&lt;stdlib.h&gt;<br \/>\n#include&lt;math.h&gt;<br \/>\n#define EX 10e-8<br \/>\ntypedef struct {double x,y;} Point;<br \/>\ntypedef struct {int p; Point point[100];} Polygon;<br \/>\nPolygon polygon[10000];<br \/>\ndouble y[10000];<\/p>\n<p>int cmp(const void* _a,const void* _b)<br \/>\n{<br \/>\nif ((double*)_a-(double*)_b&gt;0) return 1;<br \/>\nelse return -1;<br \/>\n}<\/p>\n<p>double det(double x1,double y1,double x2,double y2)<br \/>\n{<br \/>\nreturn x1*y2-x2*y1;<br \/>\n}<\/p>\n<p>double cross(Point a,Point b,Point c)<br \/>\n{<br \/>\nreturn det(b.x-a.x,b.y-a.y,c.x-b.x,c.y-b.y);<br \/>\n}<\/p>\n<p>int dblcmp(Point a,Point b,Point c)<br \/>\n{<br \/>\nif (fabs(cross(a,b,c))&lt;EX) return 0;<br \/>\nelse return cross(a,b,c)&gt;0?1:-1;<br \/>\n}<\/p>\n<p>int intersect(Point a,Point b,double x,double y)<br \/>\n{<br \/>\nPoint c,d;<br \/>\nc.y=x; c.x=0;<\/p>\n<p>d.y=y; d.x=100;<\/p>\n<p>if (dblcmp(a,b,c)*dblcmp(a,b,d)&lt;=0 &amp;&amp; dblcmp(c,d,a)*dblcmp(c,d,b)&lt;=0) return 1;<br \/>\nelse return 0;<br \/>\n}<\/p>\n<p>int check(Polygon p,double x,double y)<br \/>\n{<br \/>\nint i,flag=0;<br \/>\nPoint a,b;<\/p>\n<p>a = p.point[0];<\/p>\n<p>for(i=1;i&lt;p.p;i++)<br \/>\n{<br \/>\nif (intersect(p.point[i],a,x,y)==1) {flag=1;<br \/>\nbreak;}<br \/>\na=p.point[i];<br \/>\n}<\/p>\n<p>return flag;<br \/>\n}<\/p>\n<p>int main()<br \/>\n{<br \/>\nint k,i,t,n,m,j,l,ans,max;<br \/>\nPoint p;<\/p>\n<p>scanf(&#8220;%d&#8221;,&amp;t);<\/p>\n<p>for(i=1;i&lt;=t;i++)<br \/>\n{<br \/>\nscanf(&#8220;%d&#8221;,&amp;n);<br \/>\nmax=0;<br \/>\nm=0;<\/p>\n<p>for(j=0;j&lt;n;j++)<br \/>\n{<br \/>\nscanf(&#8220;%d&#8221;,&amp;polygon[j].p);<\/p>\n<p>for(l=0;l&lt;polygon[j].p;l++)<br \/>\n{<br \/>\nscanf(&#8220;%lf%lf&#8221;,&amp;polygon[j].point[l].x,&amp;polygon[j].point[l].y);<br \/>\ny[m++]=polygon[j].point[l].y;<br \/>\n}<br \/>\n}<\/p>\n<p>for(j=0;j&lt;m;j++)<br \/>\nfor(k=0;k&lt;m;k++)<br \/>\n{<br \/>\nans=0;<br \/>\nfor(l=0;l&lt;n;l++)<br \/>\n{<br \/>\nans+=check(polygon[l],y[j],y[k]);<br \/>\n}<br \/>\nif (ans&gt;max) max=ans;<\/p>\n<p>}<\/p>\n<p>printf(&#8220;Case %d:%dn&#8221;,i,max);<br \/>\n}<br \/>\nreturn 0;<br \/>\n}<\/p>\n<p>\/**************************************************************<br \/>\nProblem: 1116<br \/>\nUser: Lyshen<br \/>\nLanguage: C++<br \/>\nResult: Accepted<br \/>\nTime:12 ms<br \/>\nMemory:16524 kb<br \/>\n****************************************************************\/<br \/>\n\u590d\u5236\u4ee3\u7801<br \/>\nG\u9898\u6ca1\u60f3\u5230\u8fd9\u4e48\u591a\u4eba\u5728\u4e0d\u4f1a\u5355\u8c03\u961f\u5217\u7684\u60c5\u51b5\u4e0b\u505a\u51fa\u4e86\u7c7b\u4f3c\u7684\u4f18\u5316\u3002\u6b64\u9898\u539f\u578b\u662fPOJ\u67d0\u4e2a\u9898\uff0c\u6211\u4eec\u6570\u636e\u5e94\u8be5\u66f4\u5f31\u3002\u9996\u5148\u7eaf\u679a\u4e3e\u5224\u65ad\u80af\u5b9a\u662fTLE\uff0c\u7136\u540e\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u6b21\u53ea\u662f\u589e\u52a0\u4e00\u4e2a\u6570\uff0c\u5220\u9664\u4e00\u4e2a\u6570\uff0c\u90a3\u4e48\u5220\u9664\u4e4b\u540e\u6700\u5927\uff08\u6700\u5927\u6700\u5c0f\u4e00\u6837\uff0c\u6240\u4ee5\u7b97\u4e24\u6b21\u5c31\u53ef\u4ee5\uff0c\u5148\u6309\u7167\u6700\u5927\u8bb2\uff09\u5c31\u53ef\u80fd\u6539\u53d8\uff0c\u4f46\u6211\u4eec\u4e0d\u80fd\u53ea\u4fdd\u5b58\u6700\u5927\u662f\u591a\u5c11\uff0c\u56e0\u4e3a\u6700\u5927\u7684\u4e00\u65e6\u51fa\u4e86\u533a\u57df\u5c31\u4e0d\u77e5\u9053\u4e0b\u4e00\u5927\u7684\u6570\u8be5\u662f\u4ec0\u4e48\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u7ef4\u62a4\u4e00\u4e2a\u961f\u5217\uff0c\u8fd9\u4e2a\u961f\u5217\u6309\u987a\u5e8f\u4fdd\u5b58\u6700\u5927\u5230\u6700\u5c0f\u7684\u6570\u5b57\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u5982\u679c\u540e\u63d2\u5165\u7684\u6bd4\u4e4b\u524d\u63d2\u5165\u7684\u6570\u8981\u5927\uff0c\u90a3\u4e48\u524d\u9762\u7684\u6570\u5c31\u6ca1\u5fc5\u8981\u7559\u7740\u56e0\u4e3a\u6c38\u8fdc\u4e0d\u4f1a\u53d8\u6210\u6700\u5927\u503c\u3002\u4e8e\u662f\u8fd9\u4e2a\u961f\u5217\u53eb\u201c\u5355\u8c03\u961f\u5217\u201d\uff0c\u6bcf\u6b21\u63d2\u5165\u4e4b\u524d\u90fd\u4fdd\u8bc1\u91cc\u9762\u662f\u5355\u8c03\u9012\u51cf\u7684\uff0c\u800c\u63d2\u5165\u4e4b\u524d\u5224\u65ad\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u662f\u5426\u5c0f\u4e8e\u7b49\u4e8e\u8981\u63d2\u5165\u7684\u6570\uff0c\u5982\u679c\u662f\u5219\u5220\u9664\uff0c\u4e0d\u65ad\u5220\u9664\u76f4\u5230\u90fd\u5927\u4e8e\u6216\u8005\u961f\u5217\u4e3a\u7a7a\u3002\u8fd9\u6837\u6bcf\u6b21\u67e5\u8be2\u76f4\u63a5\u8fd4\u56de\u961f\u9996\uff0c\u6bcf\u6b21\u63d2\u5165\u4e4b\u524d\u5148\u5220\u9664\u9700\u8981\u5220\u9664\u7684\u5143\u7d20\uff0c\u518d\u63d2\u5165\u3002<br \/>\n\u6b64\u5916\u8fd9\u9898\u7ebf\u6bb5\u6811\u597d\u50cf\u53ef\u4ee5\uff0cRMQ\u80af\u5b9a\u53ef\u4ee5\u4f46\u4f1a\u6162\u4e00\u4e9b\u3002\u5176\u4ed6\u4eba\u60f3\u7684\u53ef\u80fd\u662f\u81ea\u5df1\u7684\u5404\u79cd\u4f18\u5316\u65b9\u6cd5\uff0c\u6709\u7684\u6bd4\u6211\u5199\u7684\u8fd8\u5feb\uff0c\u5982\u679c\u601d\u8def\u8ddf\u8fd9\u4e2a\u4e0d\u4e00\u6837\u7684\u8bdd\u5e0c\u671b\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u3002<br \/>\n#include&lt;iostream&gt;<br \/>\n#include&lt;cstdio&gt;<br \/>\n#include&lt;cstring&gt;<br \/>\nusing namespace std;<\/p>\n<p>int a[1000005];<\/p>\n<p>\/*struct F<br \/>\n{<br \/>\nint a,i;<br \/>\n}*\/<br \/>\nint f[3000005];<\/p>\n<p>int main()<br \/>\n{<br \/>\nint n,k;<br \/>\nwhile(scanf(&#8220;%d%d&#8221;,&amp;n,&amp;k)&gt;0)<br \/>\n{<br \/>\nfor(int i=0;i&lt;n;i++)<br \/>\nscanf(&#8220;%d&#8221;,&amp;a[i]);<br \/>\nint l=0,r=-1;<br \/>\nmemset(f,0,sizeof(f));<br \/>\nfor(int i=0;i&lt;k;i++)<br \/>\n{<br \/>\nwhile(r&gt;=l&amp;&amp;a[i]&lt;=a[f[r]])r&#8211;;<br \/>\nf[++r]=i;<br \/>\n}<br \/>\nprintf(&#8220;%d&#8221;,a[f[0]]);<br \/>\nfor(int i=k;i&lt;n;i++)<br \/>\n{<br \/>\nwhile(l&lt;=r&amp;&amp;f[l]+k-1&lt;i)l++;<br \/>\nwhile(r&gt;=l&amp;&amp;a[i]&lt;=a[f[r]])r&#8211;;<br \/>\nf[++r]=i;<br \/>\nprintf(&#8221; %d&#8221;,a[f[l]]);<br \/>\n}<br \/>\nprintf(&#8220;n&#8221;);<br \/>\nl=0,r=-1;<br \/>\nmemset(f,0,sizeof(f));<br \/>\nfor(int i=0;i&lt;k;i++)<br \/>\n{<br \/>\nwhile(r&gt;=l&amp;&amp;a[i]&gt;=a[f[r]])r&#8211;;<br \/>\nf[++r]=i;<br \/>\n}<br \/>\nprintf(&#8220;%d&#8221;,a[f[0]]);<br \/>\nfor(int i=k;i&lt;n;i++)<br \/>\n{<br \/>\nwhile(l&lt;=r&amp;&amp;f[l]+k-1&lt;i)l++;<br \/>\nwhile(r&gt;=l&amp;&amp;a[i]&gt;=a[f[r]])r&#8211;;<br \/>\nf[++r]=i;<br \/>\nprintf(&#8221; %d&#8221;,a[f[l]]);<br \/>\n}<br \/>\nprintf(&#8220;n&#8221;);<br \/>\n}<br \/>\nreturn 0;<br \/>\n}<br \/>\n\/**************************************************************<br \/>\nProblem: 1117<br \/>\nUser: admin<br \/>\nLanguage: C++<br \/>\nResult: Accepted<br \/>\nTime:307 ms<br \/>\nMemory:16884 kb<br \/>\n****************************************************************\/<br \/>\n\u590d\u5236\u4ee3\u7801<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0d\u77e5\u4e3a\u5565\u6ca1\u4e86\u5c45\u7136\u2026\u2026\u2026\u2026\u611f\u8c22google\u5feb\u7167\uff0c\u6015\u518d\u51fa\u4e8b\u6211\u8fd8\u662f\u8f6c\u5230\u8fd9\u4e00\u4e0b\u5427\u2026\u2026\u2026\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[9],"_links":{"self":[{"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/posts\/223702"}],"collection":[{"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/comments?post=223702"}],"version-history":[{"count":1,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/posts\/223702\/revisions"}],"predecessor-version":[{"id":224629,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/posts\/223702\/revisions\/224629"}],"wp:attachment":[{"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/media?parent=223702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/categories?post=223702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangzhe1991.org\/blog\/wp-json\/wp\/v2\/tags?post=223702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}