#include<bits/stdc++.h>
using namespace std;

int main(){
    long long w,d;
    cin >> w >> d;
    for(long long i = d;i>1;i--){
        if(w == 0) break;
        //cout << i << " " << w << endl;
        long long work = (w/(i*i));
        w-= work;
    }
    cout << w << endl;
}