View Code of Problem 139

#include<cstdio>
#include<algorithm>
#include<iostream>
#include<string.h>
using namespace std;

int main(void){
	double n;
	while(cin>>n){
		if(n==0.0)
			break;
		double sum=0;
		int i=2;
		for(i=1;sum<n;){
			sum+=1.0/++i;
		}
	    cout<<(i-1)<<" card(s)"<<endl;		
	}

}