#include<iostream>
using namespace std;
#define REP(i, a, n) for(int i=a; i<n; i++)
#define RREP(i, a, n) for(int i=n-1; i>=a; i--)
#define ll long long

int main()
{
	ll W, D;
	cin >> W >> D;

	RREP(i, 2, D + 1) {
		W -= (W / (i*i));
	}
	cout << W << endl;

	return 0;
}