#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

ll W, D;

int main() {
  cin >> W >> D;
  for (ll d = D; d >= 2; d--) {
    W -= (W / (d * d));
  }
  cout << W << endl;
  return 0;
}