import java.util.Scanner;

class No_51 {
	public static void main(String args[]) {
		Scanner stdIn = new Scanner(System.in);

		int work = stdIn.nextInt();
		int day = stdIn.nextInt();
		
		double tmp;
		while ( day != 1 ) {
			tmp = work / Math.pow(day, 2);	
			day -= 1;
			work -= Math.floor(tmp);
		}
		System.out.println(work);
	}
}