# include<iostream>
using namespace std;
int main(void) {
	double n,sum;
	cin >> n;
	int i;
	while (n) {
		double i= 2; sum = 0;
		while (sum < n) {
			sum += 1 / (i++);
		}
		cout << i -2<<" card(s)"<< endl;
		cin >> n;
	}
	system("pause");
	return 0;
}
 

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