#include <iostream>
#include <algorithm>
#include <cstdio>
#include <string>
#include <cmath>

#define ll long long

using namespace std;


int main(){

   int n,k,nim=0,a;
   cin>>n>>k;
   for(int i=0;i<n;++i) {
       cin>>a;
       if(!(a%(k+1))) nim^=1;
   }
   if(nim) cout<<"NO"<<endl;
   else cout<<"YES"<<endl;
   return 0;
}