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Re:郁闷了一上午,删除所有优化后AC了

Posted by yangguo981 at 2006-01-08 20:39:08 on Problem 1018
In Reply To:郁闷了一上午,删除所有优化后AC了 Posted by:xnby at 2005-12-03 11:51:21
> #include<stdio.h>
> main()
> {
>  int b[100][100],m[100],p[100][100];
>  int i,j,k,l,bmax,bmin,sump,t,n,tmin;
>  double max;
>  scanf("%d",&t);
>  for(i=0;i<t;i++)
>   {
>    bmax=0;bmin=32767;
>    scanf("%d",&n);
>    for(j=0;j<n;j++)
>      {
>       scanf("%d",&m[j]);
>       for(k=0;k<m[j];k++)
> 	   {
> 	     scanf("%d%d",&b[j][k],&p[j][k]);
> 	     if (bmax<b[j][k]) bmax=b[j][k];
> 		 if (bmin>b[j][k]) bmin=b[j][k];
> 	  }
>      }
>    max=0.0;
>    for(j=bmin;j<=bmax;j++)
>       {
> 	     sump=0;
>          for(k=0;k<n;k++)
> 	      {
> 	      tmin=32767;
>             for(l=0;l<m[k];l++)
> 		     if(b[k][l]>=j&&p[k][l]<tmin)
> 	           tmin=p[k][l];
> 	        sump+=tmin;
>          }
>          if((double)j/(double)sump>max)max=(double)j/(double)sump;
>        }
>     printf("%.3lf\n",max);
>   }
> } 
> 测试数据比较弱吧,在找最小值时出错,也照样AC了。

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