#include <iostream>
using namespace std;

int main(){
    
    unsigned int n, k, a = 1;
    cin >> n >> k;
    
    if(n != 0){
        cout << n / k << "\n";
    }else{
        for(int i = 0; i < n; i++)
            a *= 2;
        cout << a << "\n";
    }
    
    return 0;
}