n,k = map(int,input().split())
print ("YES") if -(-n//2) >= k else print ("NO")  n,k = map(int,input().split()) n map(int,input().split()) map int input().split() ().split () input split k print ("YES") if -(-n//2) >= k else print ("NO") -(-n//2) >= k -(-n//2) -n//2 -n n 2 k print ("YES") print "YES" print ("NO") print "NO" n,k = map(int,input().split()) map(int,input().split()) n k = map(int,input().split()) map(int,input().split()) k
n,k = map(int,input().split())
print ("YES") if -(-n//2) >= k else print ("NO") 