#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, k;
    cin >> n >> k;

    vector<int> a(n);
    for (auto& x: a) cin >> x;

    int cnt = 0;
    for (auto& x: a) cnt += x / k + (x % k > 1);

    cout << ((cnt) % 2 ? "YES" : "NO") << endl;

    return 0;
}