import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int[] card = new int[522];
		double sum = 0;
		int i = 2;
		int j = 1;
		int p;
		while (sum < 5.21) {
			sum += (1/((double)(i)));
			p = ((int)(sum * 100));
			for (; j <= p; j++) {
				card[j] = i - 1;
			}
			j = p + 1;
			i++;
		}
		int input;
		while((input = ((int)(in.nextDouble() * 100))) != 0) {
			System.out.println(card[input] + " card(s)");
		}
	}
}