#include<stdio.h>
int r;
double v,e,f,b; 
double fun1(int x)
{
if(x>=r)
return(1.0/(v-e*(x-r)));
else return (1.0/(v-f*(r-x)));
}
int  main()
{
int i,j,k,l,m,n,t,flag,x;
int a[101];
double sum,t1,t2;
while(1)
{
  scanf("%d",&n);if(n==0) break;
  sum=0.0;
  for(i=1;i<=n;i++)
    scanf("%d",&a[i]);
  scanf("%lf",&b);
  scanf("%d%lf%lf%lf",&r,&v,&e,&f);
  flag=0;
  for(x=0;x<a[1];x++)
  {
	sum+=fun1(x);
  }
  //printf("%.4lf\n",sum);
  for(j=1;j<n;j++)
  {   t1=t2=0.0;
      // chang
	  for(i=0;i<a[j+1]-a[j];i++)
		  t1+=fun1(i);
	  t1+=b;
	  // not chang 
	  for(i=a[j]-flag;i<a[j+1]-flag;i++)
		  t2+=fun1(i);

      //printf("%.4lf  %.4lf\n",t1,t2);
	  if(t1>t2) sum+=t2;
	  else if(t1<=t2) 
	  {
		 flag=a[j]; sum+=t1;
	  }
  }

  printf("%.4lf\n",sum);
}//for while
return 0;
}

• Re:出现的问题!,谁能帮忙看看!!!!!!!!! (936) woshimajiawopashui 2009-03-06 22:51:20