#include<stdio.h>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <algorithm>
#include <sstream>
#include <iostream>
#include <string>

using namespace std;

int main() {

	long long W, D;
	cin >> W >> D;

	for (long long i = D; i > 1; i--) {
		W -= W / (i*i);
	}

	cout << W << endl;

	return 0;
}