//inlclude before define 
#define _USE_MATH_DEFINES

//include
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<cmath>
#include<type_traits>
#include<numeric>
#include<assert.h>
#include<deque>
#include<iomanip>
#include<set>
#include<tuple>
#include<map>

using namespace std;

//typedef
typedef vector<int> VI;
typedef vector<string> VS;
typedef vector<char> VC;
typedef pair<int, int> P1;
typedef long long int ll;

//define
#define INF 1e9
#define NUM 1000000007
#define all(x) begin(x),end(x)

//repeat
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define REP(i,a,b) for(int i=int(a);i<int(b);i++)
#define RREPS(i,x) for(int i=((int)(x));i>0;i--)

//max,min
#define chmin(a,b) a=min((a),(b))
#define chmax(a,b) a=max((a),(b))

//function

/*ll gcd(ll a, ll b) {
	if (b == 0) return a;
	else return gcd(b, a%b);
}*/

/*ll lcm(ll a,ll b) {
	ll g = gcd(a, b);
	return a * (b / g);
}*/

/*int dig(int a) {
	int sum = 0;
	while (a) {
		sum += a % 10;
		a /= 10;
	}
	return sum;
}*/

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


	RREPS (i, d) {
		//cout << w <<" "<<i<< endl;
		if (i == 1)break;
		double a = i;
		//cout << (w / a * a) << endl;
		w -= floor(w / pow(a,2));
	}
	
	cout << w << endl;
}