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Re:同志们,求助!

Posted by 000 at 2005-08-16 20:57:02 on Problem 1392
In Reply To:同志们,求助! Posted by:freeman883 at 2005-05-17 11:13:59
> 这是我的原程序,我就搞不清楚为什么答案错误?
> #include<stdio.h>
> #include<math.h>
> void main()
> {long n,m,s,i,l;
> 
>  while(scanf("%ld %ld",&n,&m)!=EOF)
>  {
>   if(n==0&&m==0) break;
>   s=0;
>   l=m%(2*n);
>   for(i=0;i<=l;i++)
>   {
>    if(i<=n) s=s+pow(2,i-1);
>    else s=s-pow(2,i-n-1);
>   }
>   printf("%ld\n",s);
>  }
> }

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