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我的程序有什么错?

Posted by XieWenlei at 2004-07-18 20:57:49 on Problem 1701
#include <cstdio>
#include <cstring>

using namespace std;

int main()
{
  int t,m,a,b,ans,k[10000];
  long long left[10000],right[10000],num,adder,best;
 
  scanf("%d",&t);
  while (t--)
    {
      scanf("%d%d%d",&m,&a,&b);
      for(int i=0;i<m;i++)
	scanf("%d",&k[i]);
      left[0]=0;num=k[0];adder=0;
      for (int i=1;i<m;i++)
	{
	  left[i]=left[i-1]+num*a+adder;
	  adder+=num;num+=k[i];
	}
      right[m-1]=0;num=k[m-1];adder=0;
      for (int i=m-2;i>=0;i--)
	{
	  right[i]=right[i+1]+num*b+adder;
	  adder+=num;num+=k[i];
	}
      best=1000000000;best=best*best;      
      for (int i=0;i<m;i++)
	if (left[i]+right[i]<best)
	  {
	    best=left[i]+right[i];ans=i;
	  }
      printf("%d\n",ans+1);
    }
  return 0;
}

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