include <stdio.h>
#include <malloc.h>

struct times
{
	float n;
	struct times * next;
};

int main()
{
	float calculate(float);
	
	int i;			//count the input numbers
	int j;
	int result;

	struct times * head,* p1,* p2,* p;
	p1=p2=(struct times *)malloc(sizeof(struct times));
	scanf("%f",&p1->n);
	while(getchar()!='\n');	

	i=1;

	while((p1->n)!=0.00)
	{
		if(i==1)
		{	
			head=p1;
		}
		else
		{
			p2->next=p1;
			p2=p1;
			p1=(struct times *)malloc(sizeof(struct times));
			scanf("%f",&p1->n);
			while(getchar()!='\n');
		}

		i++;
	}
		
	free(p1);
	p2->next=NULL;

	i=i-1;	

	
	for(j=1;j<i;j++)
	{
		if(j==1)
		{
			p=head;
			result=calculate(p->n);
			printf("%d card(s)\n",result);
		}
		else
		{
			p=p->next;
			result=calculate(p->n);
			printf("%d card(s)\n",result);
		}
	}


	return 0;
}

float calculate(float n)
{
	float s,k=1;		//k木板数

	if(n<=0.5)
		return 1;
	
	else
	{
		while(s<=n)
		{
			s=s+1/(k+1);
			k++;
		}

		return (int)(k-1);
	}

}