#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <queue>
#include <cmath>
#include <climits>
#include <iomanip>
#include <set>
#include <map>
using namespace std;
typedef long long ll;
int main(){
    ll w,d;
    cin >> w >> d;
    for(int i = d;i >= 2;i--){
        ll now = w / (i*i);
        w -= now;
    }
    cout << w << endl;
}