View Code of Problem 139

#include<iostream>
#include<cstring>
#include<cstdio>
#include<string>
#include<vector>
#include<algorithm>
using namespace std;
int main()
{
	
	double c;
	while (cin >> c&&c!=0)
	{
		int i = 1;
		double total = 0;
		while (total < c)
		{
			i++;
			total += 1 / (double)i;
		}
		cout << i-1<<" card(s)"<<endl;
	}
	return 0;
}