> 为什么测试都过了，还是wrong answer呢，求解，感激不尽
> #include<iostream>
> using namespace std;
> 
> int main()
> {
> 	double s=0,c;
> 	int i=0;
> 	while (	cin>>c)
> 	{
> 		s=0;
> 		if(c>5.20||c<0.00 )
> 		continue;
> 		if(c==0.00)
> 		break;
> 		if(c<=0.50)
> 		{
> 			s=1;
> 			cout<<s<<"cards";
> 			continue;
> 		}
> 		for( i=2;s<c;i++)
> 		{
> 			s+=1.0/i;
> 		}
> 			cout<<i-2<<"cards";
> 	
> 	}
> 
> }