{"id":360,"date":"2010-08-24T02:00:00","date_gmt":"2010-08-23T18:00:00","guid":{"rendered":"http:\/\/localhost\/?p=360"},"modified":"2010-08-24T02:00:00","modified_gmt":"2010-08-23T18:00:00","slug":"jsoi2007_mahjong","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=360","title":{"rendered":"[JSOI2007]\u9ebb\u5c06"},"content":{"rendered":"\n<p>[JSOI2007]\u9ebb\u5c06<\/p>\n<p>Time Limit:1000MS&#160; Memory Limit:165536K<br \/>Total Submit:31 Accepted:10<\/p>\n<p><strong>Description <\/strong><\/p>\n<p> \u9ebb\u5c06\u662f\u4e2d\u56fd\u4f20\u7edf\u7684\u5a31\u4e50\u5de5\u5177\u4e4b\u4e00\u3002\u9ebb\u5c06\u724c\u7684\u724c\u53ef\u4ee5\u5206\u4e3a\u5b57\u724c\uff08\u5171\u6709\u4e1c\u3001\u5357\u3001\u897f\u3001\u5317\u3001\u4e2d\u3001\u53d1\u3001\u767d\u4e03\u79cd\uff09\u548c\u5e8f\u6570\u724c\uff08\u5206\u4e3a\u6761\u5b50\u3001\u997c\u5b50\u3001\u4e07\u5b50\u4e09\u79cd\u82b1\u8272\uff0c\u6bcf\u79cd\u82b1\u8272\u5404\u6709\u4e00 \u5230\u4e5d\u7684\u4e5d\u79cd\u724c\uff09\uff0c\u6bcf\u79cd\u724c\u5404\u56db\u5f20\u3002\u5728\u9ebb\u5c06\u4e2d\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\u4e00\u7ec4\u548c\u4e86\u7684\u724c\uff08\u5373\u5b8c\u6210\u7684\u724c\uff09\u7531\u5341\u56db\u5f20\u724c\u7ec4\u6210\u3002\u5341\u56db\u5f20\u724c\u4e2d\u7684\u4e24\u5f20\u7ec4\u6210\u5bf9\u5b50\uff08\u5373\u5b8c\u5168\u76f8\u540c\u7684\u4e24\u5f20\u724c\uff09\uff0c\u5269\u4f59 \u7684\u5341\u4e8c\u5f20\u7ec4\u6210\u4e09\u5f20\u4e00\u7ec4\u7684\u56db\u7ec4\uff0c\u6bcf\u4e00\u7ec4\u987b\u4e3a\u987a\u5b50\uff08\u5373\u540c\u82b1\u8272\u4e14\u5e8f\u6570\u76f8\u8fde\u7684\u5e8f\u6570\u724c\uff0c\u4f8b\u5982\u6761\u5b50\u7684\u4e09\u3001\u56db\u3001\u4e94\uff09\u6216\u8005\u662f\u523b\u5b50\uff08\u5373\u5b8c\u5168\u76f8\u540c\u7684\u4e09\u5f20\u724c\uff09\u3002\u4e00\u7ec4\u542c\u724c\u7684\u724c\u662f\u6307 \u4e00\u7ec4\u5341\u4e09\u5f20\u724c\uff0c\u4e14\u518d\u52a0\u4e0a\u67d0\u4e00\u5f20\u724c\u5c31\u53ef\u4ee5\u7ec4\u6210\u548c\u724c\u3002\u90a3\u4e00\u5f20\u52a0\u4e0a\u7684\u724c\u53ef\u4ee5\u79f0\u4e3a\u7b49\u5f85\u724c\u3002 <\/p>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u8003\u8651\u4e00\u79cd\u7279\u6b8a\u7684\u9ebb\u5c06\u3002\u5728\u8fd9\u79cd\u7279\u6b8a\u7684\u9ebb\u5c06\u91cc\uff0c\u6ca1\u6709\u5b57\u724c\uff0c\u82b1\u8272\u4e5f\u53ea\u6709\u4e00\u79cd\u3002\u4f46\u662f\uff0c\u5e8f\u6570\u4e0d\u88ab\u9650\u5236\u5728\u4e00\u5230\u4e5d\u7684\u8303\u56f4\u5185\uff0c\u800c\u662f\u57281\u5230n\u7684\u8303\u56f4\u5185\u3002 \u540c\u65f6\uff0c\u4e5f\u6ca1\u6709\u6bcf\u4e00\u79cd\u724c\u56db\u5f20\u7684\u9650\u5236\u3002\u4e00\u7ec4\u548c\u4e86\u7684\u724c\u75313m +  2\u5f20\u724c\u7ec4\u6210\uff0c\u5176\u4e2d\u4e24\u5f20\u7ec4\u6210\u5bf9\u5b50\uff0c\u5176\u4f593m\u5f20\u7ec4\u6210\u4e09\u5f20\u4e00\u7ec4\u7684m\u7ec4\uff0c\u6bcf\u7ec4\u987b\u4e3a\u987a\u5b50\u6216\u523b\u5b50\u3002\u73b0\u7ed9\u51fa\u4e00\u7ec43m +  1\u5f20\u7684\u724c\uff0c\u8981\u6c42\u5224\u65ad\u8be5\u7ec4\u724c\u662f\u5426\u4e3a\u542c\u724c\uff08\u5373\u8fd8\u5dee\u4e00\u5f20\u5c31\u53ef\u4ee5\u548c\u724c\uff09\u3002\u5982\u679c\u662f\u7684\u8bdd\uff0c\u8f93\u51fa\u6240\u6709\u53ef\u80fd\u7684\u7b49\u5f85\u724c\u3002 <\/p>\n<p><strong>Input <\/strong><\/p>\n<p> \u5305\u542b\u4e24\u884c\u3002 <br \/>\u7b2c\u4e00\u884c\u5305\u542b\u4e24\u4e2a\u7531\u7a7a\u683c\u9694\u5f00\u6574\u6570n, m (9&lt;=n&lt;=400, 4&lt;=m&lt;=1000)\u3002\u7b2c\u4e8c\u884c\u5305\u542b3m +  1\u4e2a\u7531\u7a7a\u683c\u9694\u5f00\u6574\u6570\uff0c\u6bcf\u4e2a\u6570\u5747\u5728\u8303\u56f41\u5230n\u4e4b\u5185\u3002\u8fd9\u4e9b\u6570\u4ee3\u8868\u8981\u6c42\u5224\u65ad\u542c\u724c\u7684\u724c\u7684\u5e8f\u6570\u3002 <\/p>\n<p><strong>Output <\/strong><\/p>\n<p> \u8f93\u51fa\u4e3a\u4e00\u884c\u3002 <br \/>\u5982\u679c\u8be5\u7ec4\u724c\u4e3a\u542c\u724c\uff0c\u5219\u8f93\u51fa\u6240\u6709\u7684\u53ef\u80fd\u7684\u7b49\u5f85\u724c\u7684\u5e8f\u6570\uff0c\u6570\u5b57\u4e4b\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00\u3002\u6240\u6709\u7684\u5e8f\u6570\u5fc5\u987b\u6309\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u8f93\u51fa\u3002\u5982\u679c\u8be5\u7ec4\u724c\u4e0d\u662f\u542c\u724c\uff0c\u5219\u8f93 \u51fa&quot;NO&quot;\u3002 <\/p>\n<p><strong>Sample Input <\/strong><\/p>\n<p>9 4<br \/>1 1 2 2 3 3 5 5 5 7 8 8 8<\/p>\n<p><strong>Sample Output <\/strong><\/p>\n<p>6 7 9<\/p>\n<p><strong>Source <\/strong><\/p>\n<p>\u6211\u771f\u662f\u5410\u8840\u554a\u3002\u3002\u4e24\u4e2a\u9ebb\u5c06\u9898\u5b8c\u5168\u4e0d\u4e00\u6837\u7684\u7011\u5e03\u6c57\u3002\u3002\u3002\u6211\u987a\u7740\u4e0a\u4e00\u9898\u7684\u529e\u6cd5\u62fc\u547d\u641e\u3002\u3002<br \/>\u5404\u79cdTLE+WA+MLE\u5927\u56e7\u3002\u3002\u3002<br \/>\u6700\u540e\u53d1\u73b0TMD\u8fd9\u9898\u5206\u660e\u662f\u8d2a\u5fc3\u9898\u554a\u3002\u3002\u6211\u771f\u662f\u4e2a\u6c99\u8336\u3002\u3002\u3002<br \/>\u9996\u5148\u679a\u4e3e\u7b49\u7684\u724c\uff0c<br \/>\u7136\u540e\u679a\u4e3e\u54ea\u4e2a\u662f\u4e00\u5bf9\uff0c<br \/>\u7136\u540e\u4ece\u5c0f\u5230\u5927\u626b\u63cf\u8fc7\u53bb\u3002\u3002<br \/>\u53ef\u4ee5\u53d1\u73b0\u5f53\u524d\u7684\u5982\u679c\u75283\u6b21\u6216\u4ee5\u4e0a\u7684\u987a\u5b50\u662f\u6c99\u8336\u7684\uff0c\u6240\u4ee5\u7528\u7684\u987a\u5b50\u6b63\u597d\u662f\u96643\u7684\u4f59\u6570\u3002\u3002<br \/>\u7136\u540e\u626b\u63cf\u8fc7\u53bb\u5c31OK\u4e86\u3002\u3002<br \/>\u590d\u6742\u5ea6\u662fO\uff08N^3\uff09\u3002\u3002\u3002<br \/>\u5b9e\u9645\u4e0aHash+Dp\u4e5f\u80fd\u8fc7\u5f88\u591a\u70b9\u7684\u6837\u5b50\u3002\u3002<br \/>Code\uff1a<br \/>#include &lt;cstdio&gt;<br \/>#include &lt;map&gt;<br \/>#include &lt;iostream&gt;<br \/>#include &lt;cstring&gt;<br \/>#define rep(i,n) for(int i=0;i&lt;n;i++)<br \/>const int inf=~0U&gt;&gt;1,maxn=400;<br \/>using namespace std;<br \/>typedef unsigned long long ull;<br \/>int A[maxn]={},B[maxn]={},n,m;<br \/>bool Check()<br \/>{<br \/>    rep(cur,n)<br \/>        if(A[cur]&gt;=2)<br \/>        {<br \/>            A[cur]-=2;<br \/>            rep(i,n)B[i]=A[i];<br \/>            bool ok=true;<br \/>            for(int i=0;i&lt;n;)<br \/>            {<br \/>                B[i]%=3;<br \/>                if(!B[i])i++;<br \/>                else<br \/>                {<br \/>                    if(i+2&lt;n)<br \/>                    {<br \/>                        if(B[i+1]&lt;B[i]){ok=false;break;}<br \/>                        B[i+1]-=B[i];<br \/>                        if(B[i+2]&lt;B[i]){ok=false;break;}<br \/>                        B[i+2]-=B[i];<br \/>                        i++;<br \/>                    }<br \/>                    else<br \/>                    {<br \/>                        ok=false;<br \/>                        break;<br \/>                    }<br \/>                }<br \/>            }<br \/>            A[cur]+=2;<br \/>            if(ok)return true;<br \/>        }<br \/>    return false;<br \/>}<br \/>int main()<br \/>{<br \/>    \/\/freopen(&quot;in&quot;,&quot;r&quot;,stdin);<br \/>    \/\/freopen(&quot;out&quot;,&quot;w&quot;,stdout);<br \/>    cin&gt;&gt;n&gt;&gt;m;int x;<br \/>    rep(i,m*3+1)<br \/>    {<br \/>        scanf(&quot;%d&quot;,&amp;x);<br \/>        A[&#8211;x]++;<br \/>    }<br \/>    int s=0;<br \/>    rep(i,n)<br \/>    {<br \/>        A[i]++;<br \/>        if(Check())<br \/>        {<br \/>            s++;<br \/>            printf(&quot;%d &quot;,i+1);<br \/>        }<br \/>        A[i]&#8211;;<br \/>    }<br \/>    if(!s)puts(&quot;NO&quot;);<br \/>}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[JSOI2007]\u9ebb\u5c06 Time Limit:1000MS&#160; Memory Limit:165536KTotal Submit:31 Accepted:10 Description \u9ebb\u5c06\u662f\u4e2d\u56fd\u4f20\u7edf\u7684\u5a31\u4e50\u5de5\u5177\u4e4b\u4e00\u3002\u9ebb\u5c06\u724c\u7684\u724c\u53ef\u4ee5\u5206\u4e3a\u5b57\u724c\uff08\u5171\u6709\u4e1c\u3001\u5357\u3001\u897f\u3001\u5317\u3001\u4e2d\u3001\u53d1\u3001\u767d\u4e03\u79cd\uff09\u548c\u5e8f\u6570\u724c\uff08\u5206\u4e3a\u6761\u5b50\u3001\u997c\u5b50\u3001\u4e07\u5b50\u4e09\u79cd\u82b1\u8272\uff0c\u6bcf\u79cd\u82b1\u8272\u5404\u6709\u4e00 \u5230\u4e5d\u7684\u4e5d\u79cd\u724c\uff09\uff0c\u6bcf\u79cd\u724c\u5404\u56db\u5f20\u3002\u5728\u9ebb\u5c06\u4e2d\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\u4e00\u7ec4\u548c\u4e86\u7684\u724c\uff08\u5373\u5b8c\u6210\u7684\u724c\uff09\u7531\u5341\u56db\u5f20\u724c\u7ec4\u6210\u3002\u5341\u56db\u5f20\u724c\u4e2d\u7684\u4e24\u5f20\u7ec4\u6210\u5bf9\u5b50\uff08\u5373\u5b8c\u5168\u76f8\u540c\u7684\u4e24\u5f20\u724c\uff09\uff0c\u5269\u4f59 \u7684\u5341\u4e8c\u5f20\u7ec4\u6210\u4e09\u5f20\u4e00\u7ec4\u7684\u56db\u7ec4\uff0c\u6bcf\u4e00\u7ec4\u987b\u4e3a\u987a\u5b50\uff08\u5373\u540c\u82b1\u8272\u4e14\u5e8f\u6570\u76f8\u8fde\u7684\u5e8f\u6570\u724c\uff0c\u4f8b\u5982\u6761\u5b50\u7684\u4e09\u3001\u56db\u3001\u4e94\uff09\u6216\u8005\u662f\u523b\u5b50\uff08\u5373\u5b8c\u5168\u76f8\u540c\u7684\u4e09\u5f20\u724c\uff09\u3002\u4e00\u7ec4\u542c\u724c\u7684\u724c\u662f\u6307 \u4e00\u7ec4\u5341\u4e09\u5f20\u724c\uff0c\u4e14\u518d\u52a0\u4e0a\u67d0\u4e00\u5f20\u724c\u5c31\u53ef\u4ee5\u7ec4\u6210\u548c\u724c\u3002\u90a3\u4e00\u5f20\u52a0\u4e0a\u7684\u724c\u53ef\u4ee5\u79f0\u4e3a\u7b49\u5f85\u724c\u3002 \u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u8003\u8651\u4e00\u79cd\u7279\u6b8a\u7684\u9ebb\u5c06\u3002\u5728\u8fd9\u79cd\u7279\u6b8a\u7684\u9ebb\u5c06\u91cc\uff0c\u6ca1\u6709\u5b57\u724c\uff0c\u82b1\u8272\u4e5f\u53ea\u6709\u4e00\u79cd\u3002\u4f46\u662f\uff0c\u5e8f\u6570\u4e0d\u88ab\u9650\u5236\u5728\u4e00\u5230\u4e5d\u7684\u8303\u56f4\u5185\uff0c\u800c\u662f\u57281\u5230n\u7684\u8303\u56f4\u5185\u3002 \u540c\u65f6\uff0c\u4e5f\u6ca1\u6709\u6bcf\u4e00\u79cd\u724c\u56db\u5f20\u7684\u9650\u5236\u3002\u4e00\u7ec4\u548c\u4e86\u7684\u724c\u75313m + 2\u5f20\u724c\u7ec4\u6210\uff0c\u5176\u4e2d\u4e24\u5f20\u7ec4\u6210\u5bf9\u5b50\uff0c\u5176\u4f593m\u5f20\u7ec4\u6210\u4e09\u5f20\u4e00\u7ec4\u7684m\u7ec4\uff0c\u6bcf\u7ec4\u987b\u4e3a\u987a\u5b50\u6216\u523b\u5b50\u3002\u73b0\u7ed9\u51fa\u4e00\u7ec43m + 1\u5f20\u7684\u724c\uff0c\u8981\u6c42\u5224\u65ad\u8be5\u7ec4\u724c\u662f\u5426\u4e3a\u542c\u724c\uff08\u5373\u8fd8\u5dee\u4e00\u5f20\u5c31\u53ef\u4ee5\u548c\u724c\uff09\u3002\u5982\u679c\u662f\u7684\u8bdd\uff0c\u8f93\u51fa\u6240\u6709\u53ef\u80fd\u7684\u7b49\u5f85\u724c\u3002 Input \u5305\u542b\u4e24\u884c\u3002 \u7b2c\u4e00\u884c\u5305\u542b\u4e24\u4e2a\u7531\u7a7a\u683c\u9694\u5f00\u6574\u6570n, m (9&lt;=n&lt;=400, 4&lt;=m&lt;=1000)\u3002\u7b2c\u4e8c\u884c\u5305\u542b3m + 1\u4e2a\u7531\u7a7a\u683c\u9694\u5f00\u6574\u6570\uff0c\u6bcf\u4e2a\u6570\u5747\u5728\u8303\u56f41\u5230n\u4e4b\u5185\u3002\u8fd9\u4e9b\u6570\u4ee3\u8868\u8981\u6c42\u5224\u65ad\u542c\u724c\u7684\u724c\u7684\u5e8f\u6570\u3002 Output \u8f93\u51fa\u4e3a\u4e00\u884c\u3002 \u5982\u679c\u8be5\u7ec4\u724c\u4e3a\u542c\u724c\uff0c\u5219\u8f93\u51fa\u6240\u6709\u7684\u53ef\u80fd\u7684\u7b49\u5f85\u724c\u7684\u5e8f\u6570\uff0c\u6570\u5b57\u4e4b\u95f4\u7528\u4e00\u4e2a\u7a7a\u683c\u9694\u5f00\u3002\u6240\u6709\u7684\u5e8f\u6570\u5fc5\u987b\u6309\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u8f93\u51fa\u3002\u5982\u679c\u8be5\u7ec4\u724c\u4e0d\u662f\u542c\u724c\uff0c\u5219\u8f93 \u51fa&quot;NO&quot;\u3002 Sample Input 9 41 1 2 2 3 3 5 5 5 7 8 8 8 Sample Output 6 7 9 Source 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&lt;cstdio&gt;#include &lt;map&gt;#include 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