poj 1003

#include <stdio.h>
int main()
{
	float f = 1.0f;
	while(1)
	{
		scanf("%f", &f);
		if(f==0.00f)
			break;
		float sum = 0.0f;
		int i = 2;
		for(; sum<f; i++)
			sum += 1.0f/i;
		
		printf("%d card(s)\n",i-2);
	}
	return 0;
}