#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

int main(){
  ll W, D; cin >> W >> D;
  for(ll i = D; i > 0; i--){
    if(i == 1){
      cout << W << endl;
    }else{
      ll yaruki = i*i;
      W -= W/yaruki;
    }
  }
}