import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int n = sc.nextInt();
        int h = sc.nextInt();
        int[] as = new int[n];
       
        long data = 1l;
        if(h == 1){
            System.out.println("YES");
            return;
        }
        for(int i = 0 ; i < n ; i++){
            
            int a = sc.nextInt();
            
            data = (data % h) * (a % h);
            
        }
       
        System.out.println(data % h == 0 ? "YES" : "NO");
        
    }
   
}