#include <iostream>
#include <vector>
#include <stack>
#include <queue>
#include <algorithm>
#include <set>
#include <map>
#include <iomanip>
#include <cassert>
using namespace std;

int main() {
    int n, k;
    cin >> n >> k;
    if(n <= 0 || n > 200000 || k <= 0 || k > n || n % k != 0) assert(false);
    int m = n / k;
    if(n == 1) {
        cout << "Yes" << endl;
        return 0;
    }
    if((n % 2 == 0 && m % 2 == 1) || m == 1) {
        cout << "No" << endl;
        return 0;
    }
    cout << "Yes" << endl;
    return 0;
}