/* -*- coding: utf-8 -*-
 *
 * 51.cc: No.51 やる気の問題 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

typedef long long ll;

/* global variables */

/* subroutines */

/* main */

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

  for (ll di = d; di > 1; di--) {
    ll dw = w / (di * di);
    w -= dw;
    //printf("di=%lld: dw=%lld, w=%lld\n", di, dw, w);
  }

  printf("%lld\n", w);
  return 0;
}