#include <iostream>
#include <iomanip>

#include <algorithm>
#include <string>
/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) cout<<(p)<<endl;
/////////
typedef long long LL;
typedef long double LD;
/////////
using namespace::std;
/////////

int main(void){
	cin.tie(0);
	ios::sync_with_stdio(false);
	cout << fixed;//
	//cout << setprecision(7);//
	
	int W,D;
	cin>>W>>D;
	int w = W;
	int d = D;
	while(d>1){
		if(d>1000){
			//10^5/10^6 = 0
		}else{
			w -= w/(d*d);
		}

		--d;
	}
	P(w);
	return 0;
}