POJ 1003(累加)

/*
 * POJ_1003.cpp
 *
 *  Created on: 2013年10月14日
 *      Author: Administrator
 */

#include <iostream>
#include <cstdio>

using namespace std;

int main(){

	double n;
	while(scanf("%lf",&n)!=EOF,n !=0.00){
		double sum = 0;

		int counter = 1;
		while(sum < n){
			sum += (1.0/(counter+1) );

			counter++;
		}

		printf("%d card(s)\n",counter-1);
	}

	return 0;
}