#include using namespace std; typedef long long ll; typedef pair P; const int INF = 1e9; const int mod = 1e9+7; const double EPS = 1e-10; const double PI = acos(-1.0); int main() { long long w,d; cin >> w >> d; for(ll i = d; i > 1; i--){ w -= w / (i*i); } cout << w << endl; return 0; }