#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>

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;
}