#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < n; i++)
using namespace std;
typedef long long ll;
typedef pair<int,int> P;

int main()
{
	int N,W;
	cin >> N >> W;
	cout << N/W << endl;
	return 0;
}
#include<iostream>

using namespace std;

int main(){
  int32_t X{},Y{};
  cin >> X >> Y;
  if(X-Y<3 && Y-X <3){
    cout << "Yes" << endl;
  }else{
    cout << "No" << endl;
  }
  return 0;
}