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Re:为什么我的第5个数据和第7个数据错了?

Posted by ANights at 2016-06-02 12:10:40 on Problem 1062
In Reply To:为什么我的第5个数据和第7个数据错了? Posted by:xijunlee93 at 2012-12-03 19:44:36
> 对了下别人的数据,发现7组数据对了5组,其中两组错了。
> 分别是
> 0 5
> 10000 3 4
> 2 3000
> 3 2000
> 4 2000
> 5 9000
> 8000 2 3
> 3 5000
> 4 2000
> 5 7000
> 5000 4 0
> 2000 3 1
> 5 1900
> 50 2 0
> ans:3950
> 而我的是4000
> 另外一组答案是105
> 而我的是104
> 
> 我用的算法就是DFS,很简单的搜索啊,为什么会有两组数据是错的?
> 附上源代码:
> #include<fstream>
> using namespace std;
> int m,n,owner[101],t[101][50],v[101][50],ans=21400000;
> int abs(int a,int b)
> {
>     if (a>b)
>     return a-b;
>     else
>     return b-a;
> }
> int min(int a,int b)
> {
>     if (a<b)
>     return a;
>     else return b;
> }
> int dfs(int num)
> {
>     int i,temp=2140000;
>     for (i=1;i<=t[num][0];i++)
>        if (abs(owner[num],owner[t[num][i]])<=m)
>        temp=min(temp,dfs(t[num][i])+v[num][i]);
>     temp=min(temp,v[num][0]);
>     return temp;
> }
> int main()
> {
>      ifstream infile;
>      ofstream outfile;
>      infile.open("data.in",ios::in);
>      outfile.open("data.out",ios::out);
>      int p,l,x,i,j,temp;
>      infile>>m>>n;
>      for (i=1;i<=n;i++)
>      {
>         infile>>p>>l>>x;
>         v[i][0]=p;owner[i]=l;
>         t[i][0]=x;
>         for (j=1;j<=x;j++)
>         infile>>t[i][j]>>v[i][j];
>      }
>      temp=dfs(1);
>      ans=min(ans,temp);
>      outfile<<ans;
>      infile.close();
>      outfile.close();
>      return 0;
> }

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