#include <vector>
#include <string>
#include <algorithm>
#include <numeric>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <iterator>
#include <cmath>
#include <iomanip>
using namespace std;

using ull = unsigned long long;
using ll = long long;

int main()
{
    ull w,d;
    cin >> w >> d;


    for(ull i = d; i > 1; --i)
    {
        w -= floor(w/(i*i));
    }

    cout << w << endl;
}