#include<stdio.h>
int main()
{
	int n,m,k,a[10000],i,b,c;
	while(scanf("%d %d %d",&n,&m,&k)!=EOF)
	{
		int flag=0;
		if(m>k)
		{
			printf("YES\n");
			continue;
		}
		for(i=1;i<=n;i++)
		{
			scanf("%d",&a[i]);
			if(a[i]<=m)flag++;
		}
		if(m<k && flag==n)
		{
			printf("YES\n");
			continue;
		}
		if(m<k && flag<n)
		{
			printf("NO\n");
			continue;
		}
		for(i=1;i<=n;i++)
		{
			b=m+1;
			c=a[i]%b;
			if(c==0)
			{
				printf("NO\n");
				break; 
			}
			else if(i==n)printf("YES\n");
		}
	}
	return 1;
}