#include <stdio.h>

int main(void)
{
	int power;
	int work;
	int day;
	int i;
	
	scanf("%d %d", &work, &day);
	
	for (i = day; i > 0; i--) {
		power = work / (i * i);
		
		if (i == 1) {;} else {
			work -= power;
		}
	}
	
	printf("%d\n", work);
	
	return 0;
}