import java.util.Scanner;

public class No51 {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int work = s.nextInt();
        int day = s.nextInt();
        while (day > 1) {
            work -= work / (day * day);
            day--;
        }
        System.out.println(work);
    }
}